Pentax or Ricoh would be better off catching up. There will be no more electronics for slrs cameras, nor will there be any mechanical parts. I hope Pentax gets over the idea that they invented the reflex mirror and catch up with the rest of the companies. Great car manufacturers will not stop at the idea of a fossil fuel engine. Everyone is racing towards electric cars. Pentax also needs to get rid of its analog legacy and go completely digital. It's simple: start with a camera and one 50mm lens with an adapter, or join the L group.
the mirrorless market is too crowded with quality competitive products
what could Pentax offer to differentiate itself?
any new Pentax mirrorless body would require all the Pentax users to buy entirely new gear. Plus many desired lenses wouldn't appear at launch so customers would have to wait for Pentax to develop and release them....while Pentax is waiting to see if there are enough customers to justify that
plus there are reasons people stayed with their Pentax gear that maybe wouldn't want a mirrorless camera since that would mean not having their desired features (large viewfinder? larger body?)
going L mount would be interesting, not sure what the royalty cost would be