Class D amps seem poised to take over. Then what?

Since two weeks I own a Boulder 1160 Amp. It replaced a pair of Nuprime Reference 20. The Nuprimes were heavily modified. Duelund silver Bypass Caps, Neotech UP OCC silver internal wiring, pure silver power wiring, WBT nextgen silver binding posts and rca, synergistic orange fuses...
I also heard the new Nuprime Evos in my system. Nuprime are great amps but - the Boulder destroys them. It is so much more revealing, has tons more resolution, is as musical but less coloring, has better Control. The Boulder is my last amp. Main negative point is that it produces a lot of heat but I have to live with that.

Class D has already taken over. There are more class D amps sold than all the rest combined by far and their market share is growing while the rest is shrinking. I'm sure boutique brands will be available to those that want them.

Yes and more Corollas are sold by Toyota than Supra’s .

Perspective…. 

Yes, and they both use class D amps.

Class A amps are appealing, less heat, lots of watts, good specs.  Will they drive difficult loads?  We buy speakers that require the current and then see the price of an A or AB.  I'll keep my XA25 and efficient speakers.  House not heated up and electric bill is virtually the same.  

Then what? People wake up and go back to their class a and a/b amps.