And that's all good, we don't need more people cloning an OS that was good 50 years ago.

Modern software is sidestepping the UNIX way left and right. Rightly so, as anyone who's tried to write anything serious in shell would know. Or anyone who realizes that non-blocking I/O was an afterthought (look into the history of select(2) and why libraries like libev exist and what problems they run into on unix derivatives..) and that there's still nothing like a standard, robust, well designed async I/O API.

UNIX was good, for an OS given away with source code and an almost free license (versus what other mainframe OS were asking for).

History would be quite different if AT&T was allowed to sell it from day one.