So you propose what, that the industry as a whole voluntarilty re-enters the dark ages by throwing away its current crop of systems with no replacement in sight ?!
It looks to me like our current crop of unix derivatives and unix-likes is catering for a lot of needs very well. We have windows which is non-Unix.
I think the onus is on you to show that something else could be better, and better enough that the pain of relearning would be worth it.