I would point out, by comparison, that piston engines are effectively obsolete for certain applications. Most aircraft operate on some type of jet engine, which involves the same core concepts of thermodynamics and aeronautics, but are still fundamentally different. They also optimize for different criteria, which is why neither jet engines nor piston engines hold a monopoly on any class of vehicle.

This is really stretching the computer metaphor. I think my point is that there will be room for rethinking paradigms as our applications of computers grow to include things that weren't originally planned for. But in a mature technology there's a lot of established precedent, and that's not easily overcome. It takes something that can improve the field like jet engines made new aircraft possible.