You're right, YC is far from a neutral party here. But then again, I don't think any for-profit organisation spending the money on lawyers to write amicus brief

You're right, YC is far from a neutral party here. But then again, I don't think any for-profit organisation spending the money on lawyers to write amicus briefs is. They're looking for free data for their AI startups to make money off of, and with Google being in the middle of an antitrust catastrophe that may very well collapse web browser variety to two options in the next years, there's a lot of money to be made by stoking the flames.