https://arstechnica.com/gadgets/2022/09/google-launches-third-party-play-store-billing-pilot-but-only-cuts-fees-by-4/

Google is slowly opening up the Play Store's billing policies. The "user choice billing" pilot program that was announced in March is now accepting signups. Google describes the program in a support article, saying, "This pilot is designed to test offering an alternative billing option next to Google Play's billing system and to help us explore offering this choice to users. We are looking to gain feedback in different countries and ensure we can maintain a positive user experience."