update licensing language (sourcegraph#25620)

LICENSE

@@ -1 +1,3 @@
-LICENSE.apache (Apache License) applies to all files in this repository, except for those in or under any directory named "enterprise", which are covered by LICENSE.enterprise.
+LICENSE.apache (Apache License) applies to all files in this
+repository, except for those in or under any directory named
+"enterprise", which are covered by LICENSE.enterprise.

README.md

@@ -1,9 +1,8 @@
 # <a href="https://sourcegraph.com"><picture><source srcset="./ui/assets/img/sourcegraph-head-logo.svg" media="(prefers-color-scheme: dark)"/><img alt="Sourcegraph" src="./ui/assets/img/sourcegraph-logo-light.svg" height="48px" /></picture></a>
 
 [![build](https://badge.buildkite.com/00bbe6fa9986c78b8e8591cffeb0b0f2e8c4bb610d7e339ff6.svg?branch=master)](https://buildkite.com/sourcegraph/sourcegraph)
-[![apache license](https://img.shields.io/badge/license-Apache-blue.svg)](LICENSE)
 
-[Sourcegraph](https://about.sourcegraph.com/) OSS edition is a fast, open-source, fully-featured code search and navigation engine. [Enterprise editions](https://about.sourcegraph.com/pricing) are available.
+[Sourcegraph](https://about.sourcegraph.com/) is a fast and featureful code search and navigation engine.
 
 ![sourcegraph com_github com_golang_go_-_blob_src_net_http_request go_L855_6](https://user-images.githubusercontent.com/989826/126650657-cef98203-1505-4848-aab6-57acda1ec35f.png)
 
@@ -14,23 +13,29 @@
 - Enhances GitHub, GitLab, Phabricator, and other code hosts and code review tools via the [Sourcegraph browser extension](https://docs.sourcegraph.com/integration/browser_extension).
 - Integration with third-party developer tools via the [Sourcegraph extension API](https://docs.sourcegraph.com/extensions).
 
-## Try it yourself
+## Try it now
 
-- Try out the public instance on any open-source repository at [sourcegraph.com](https://sourcegraph.com/github.com/golang/go/-/blob/src/net/http/httptest/httptest.go#L41:6&tab=references).
-- Install the free and open-source [browser extension](https://chrome.google.com/webstore/detail/sourcegraph/dgjhfomjieaadpoljlnidmbgkdffpack?hl=en).
-- Spin up your own instance with the [quickstart installation guide](https://docs.sourcegraph.com/#getting-started)
-- File feature requests and bug reports in [our issue tracker](https://github.com/sourcegraph/sourcegraph/issues).
-- Visit [about.sourcegraph.com](https://about.sourcegraph.com) for more information about product features.
+Sourcegraph has three editions:
+
+- [Sourcegraph Cloud](https://sourcegraph.com) lets you search over the open-source ecosystem plus your private code. [Search strings](https://sourcegraph.com/search?q=context:global+failed+to+ensure+HEAD+exists&patternType=literal), [search patterns](https://sourcegraph.com/search?q=context:global+lang:python+range%28len%28:%5B1%5D%29%29&patternType=structural), [search symbols](https://sourcegraph.com/search?q=context:global+type:symbol+lang:typescript+%28OA%7Coa%7COa%29uth+%5BHh%5Dandler+-file:%28%5E%7C/%29node_modules/+&patternType=regexp&case=yes) and [find references](https://sourcegraph.com/github.com/spf13/cobra@a684a6d7f5e37385d954dd3b5a14fc6912c6ab9d/-/blob/command.go?L221:19&subtree=true#tab=references) across your entire codebase and the open-source world.
+- [Sourcegraph Enterprise](https://docs.sourcegraph.com/#getting-started) lets you run your own Sourcegraph instance in your own environment.
+- [Sourcegraph OSS](#sourcegraph-oss) is an open-source version of Sourcegraph that provides the core functionality of Sourcegraph (code search, code browsing, basic code navigation), but lacks more advanced features (enterprise authentication, repository permissions, admin controls, advanced code navigation, etc.)
+
+> Source code for all three editions is contained in this repository. See the [License section](#license) for more details.
 
-## Installation
+More:
 
-## Run Sourcegraph Enterprise for Free (up to 10 users)
+- Install the open-source [browser extension](https://chrome.google.com/webstore/detail/sourcegraph/dgjhfomjieaadpoljlnidmbgkdffpack?hl=en) to add Sourcegraph-like powers to your code review and code host.
+- File feature requests and bug reports in [our issue tracker](https://github.com/sourcegraph/sourcegraph/issues).
+- Visit [about.sourcegraph.com](https://about.sourcegraph.com) for more information about features, use cases, and organizations that use Sourcegraph.
+
+## Self-hosted installation
 
-The fastest way to run Sourcegraph is to run a pre-built Docker images. See the [quickstart installation guide](https://docs.sourcegraph.com/#getting-started). Sourcegraph also offers several ways of running a [production instance](https://docs.sourcegraph.com/admin/install).
+### Sourcegraph Enterprise (free up to 10 users)
 
-## Sourcegraph OSS
+The fastest way to run Sourcegraph self-hosted is with the Docker container. See the [quickstart installation guide](https://docs.sourcegraph.com/#getting-started). There are also several additional ways of running a [production instance](https://docs.sourcegraph.com/admin/install).
 
-To use Sourcegraph OSS:
+### Sourcegraph OSS
 
 1. Clone this repository
 1. [Ensure Docker is running](doc/dev/getting-started/quickstart_2_start_docker.md)
@@ -64,6 +69,8 @@ The `doc` directory has additional documentation for developing and understandin
 
 ## License
 
-Sourcegraph OSS is available freely under the [Apache 2 license](LICENSE.apache). Sourcegraph OSS comprises all files in this repository except those in the `enterprise/` and `client/web/src/enterprise` directories.
+This repository contains both OSS-licensed and non-OSS-licensed files. We maintain one repository rather than two separate repositories mainly for development convenience.
+
+All files in the `enterprise` and `client/web/src/enterprise` fall under [LICENSE.enterprise](LICENSE.enterprise).
 
-All files in the `enterprise/` and `client/web/src/enterprise/` directories are subject to the [Sourcegraph Enterprise license](LICENSE.enterprise).
+The remaining files fall under the [Apache 2 license](LICENSE.apache). Sourcegraph OSS is built only from the Apache-licensed files in this repository.