As I just explained to my 16 year old daughter about YouTube policies. YouTube is a business. Businesses will do whatever they need to do to get customers and make money. If anyone was under some strange illusion that YouTube was a public and free platform to make money and/or create any content they wanted was naive at best. If you want to create a channel for users to view your content, purchase a domain, buy a VM…
It would be interesting to see a napkin calculation on this, because I highly doubt this is true. Bandwidth cost and video compression are both a lot better these days than people think, and if you could cut the middle man out of advertising (which you might could if you have millions of viewers) I think the benefit would be significant.
Of course, YouTube does not only provide bandwidth and servers. They provide a "platform", not in the technical sense but in the broader sense. They have well working apps on all mobile platforms, they have a social network, they have editing tools and redundancy, they have so many benefits that you'd really have to think twice before taking them on.
Your idea of a strike is interesting, while I doubt it would happen I would love for content creators to team up and make common demands.