I'd probably be OK if all the content which doesn't get made without sponsorship wouldn't get made at all, and the people who work as content creators stopped doing so. There is an overabundance of new content, having 10x less content would be perfectly fine, and in pretty much every niche there are amateur enthusiasts who clearly (based on their amount of viewers) are giving their time away, and their content is in many ways preferable and "more real" than the professionals - so I'd be OK if all the professionals stop and these awkward amateur enthusiasts are all that remain.

The same applies to web and blogs; the ability to monetize them by ads (and I do remember the "old web" before it was the case) increased the content but drowned out viewership for the true enthusiasts running things in their spare time, which IMHO were more valuable and I think that regime was better; again, losing 90% or 99% of the content wouldn't be bad in my mind, there still would be more than enough for anyone to ever "consume".