I dont use those particular other services to be fair. I do admittedly pay for Nebula, but to my understanding that is supposed to be more creator driven and is quite cheap anyway.
The thing about YouTube adblocking, at least for me, is that I dont think they owe me free and ad free content, or that they should be obligated to offer that for some reason. I fully understand that delivering video the way they do costs some amount of money even if not very much for an individual user, so blocking their monetization scheme means that using their website costs them money. However, I do not like or respect that company, I feel that their engagement algorithms have proven generally harmful to society as a whole by pushing people to more extreme content to improve retention, and I feel that their position as the primary place anyone thinks of to upload or view video not created by large scale studios is non-ideal. As such, when I do end up watching something there (content which, I might add, isnt even something that they create, just stuff independent creators are pretty much forced to upload there to be relevant as they are by far the largest game in town for their niche), I’m not bothered by blocking their ads, because I dont really care about Youtube’s profit margin. If anything, if doing so actually harms them, in some tiny way, that is a bonus in my book.