There's already an ongoing antitrust case against Google, so they could be banking on the fact that if it fails there likely won't be enough political capital to go after them again.
Implement what? Anti-ad-blocking?
> Google's Chrome browser now aggressively thwarts uBlock on YouTube.com.
If the browser just does block ad-blocking on YouTube. If I would be hosting a video platform, can I add my site to the list?