The history of technology suggests that, like everything else, computers will eventually stabilise. During WWI, some designs of aircraft were useful for less than three months, and designs have run through enormous changes since. But, since the Boeing 747 Jumbo of the late 1960s, passenger planes have been broadly static in design and layout. Steam power, medical technologies and many more have run similar paths over similar timescales. The personal computer arrived in 1978, so in perhaps 30 years it might all settle down.
Stability is already long overdue.