This is death kiss to indie developement.
But paradoxically it is great. Killing interoperability is nail to coffin. This brings more and more focus to alternative solutions out of Google market, especially in independent software area. Like yt-dlp, FreeTube, F-Droid - actually all my family uses them and I recommend it to everyone. I can't wait to get some alternative GDrive client lib which simulates browser to throw data over that garden wall, and I don't care if it nags with captcha. The more hassle the more people are going to hate that ivory tower.