Ad companies only have themselves to blame. Way back when pop-ups were common, I found adblockers, and haven't spent 10 minutes online since without one.
The ad business has been throwing afs down our faces for years. The business owners allowing ads on their sites allowed shady ad companies to have malware/virus, etc which obviously lost the trust of everyone. The rise of ad blockers caused even more ads because the previous ads were no longer generating as much revenue.
Now we're back to having ads everywhere and it's driving business away. No one likes ads, yet they shovel it by the truck loads.
While I can see federated video channels being a thing, would advertising be possible on it, at least in the same capacity as YouTube? Because from my understanding, a lot of channels are only able to exist the way they do because it's a career for the channel owner. They can make a living off it, and in turn, they can dedicate their full time to the channel, rather than treat it as a hobby.
Would ads be provided by a different service? And wouldn't we see the same thing with Reddit, where the existing community is so big that people are scared to use something that may not reach as many people? With forums, its one thing, but when the aim is to make it big and potentially make a living off of videos, that might discourage people more.