At least two, and I expect many more to follow. It'd be great to have some other platforms to emerge (back), as this quasi Monopoly doesn't seem very healthy to me

They tried that on my 15 years old account, then they reverted it back because I could still watch them in incognito windows, or stopped completely watching Youtube.

I am not very profitable to them anyway, but they appear to test you for a couple of days and see how you would react.

Two. Those particular ads are so intrusive and annoying that I never finish a video. I’d like to figure out a way to youtube-dl just by clicking the video link.