Apple is reportedly putting Mac development on the back burner
engadget.com
engadget.com
It would attract more developers and in turn better quality software and more software means more customers.
The program was generally not well received: https://en.wikipedia.org/wiki/Macintosh_clone
Power Computing demonstrated prototypes that would take the Mac into new markets that Apple's designs didn't fit well in, and publicly begged Apple to allow them to sell them, but Apple refused.
The result was that the pseudo-clones competed directly for the same customers Apple was going for, and so of course the program was a failure. A successful authorized clone program needs to grow the market, not merely redistribute it.