This license includes the right to do things like copy it to our database and make backups; show it to you and other users; parse it into a search index or otherwise analyze it on our servers; share it with other users; and perform it, in case Your Content is something like music or video.
This license does not grant GitHub the right to sell Your Content. [...]
So, it's not clear if they could charge for Copilot, given that last line, but indexing, analysis, and sharing with other users are all included.