From Bloomberg (not on the web yet):

Amazon.com Inc., American Express Co., Daimler AG and Stripe Inc. are among those joining a new GitHub program that will let companies directly fund open-source projects and software developers that are key to their businesses.

Edit: would probably update with this link: https://siliconangle.com/2020/12/08/github-universe-2020-bri...

can individuals sponsor instead of just companies?