[bratsche]

I don't really get how it would cause that to happen.

Right now sites are being paid by advertisers. Under this scheme they're being paid by users. It doesn't say they're being paid more (or less), so I don't see why this would have any effect on whether sites use ads or not.

[LeoPanthera]

Well, YouTube was the same way. Video creators being paid by advertisers. Then YouTube Red came along - pay a free, see no ads, and your money goes to the video creators.

But under YouTube Red, revenue for creators went up. I would imagine the same thing would happen here.