All else being equal? Sure. But even the way youre speaking right now would seem to imply some kind of overhead control, new standards, agreements, things of that nature that are already possible, but if imposedvwould go against the nature of the fediverse.
By that same token, there is a very real market out there clearly for a user friendly onboarding into the fediverse so, go build it? There isn't anything stopping anyone from addressing the issues you've raised other than tech and adoption.
But you're putting the cart before the horse IMO.