I think it's the case that the market was very small for the "hyperbike" segment so Suzuki and Kawasaki dialed it back....Kawasaki already had the H2 which will easily outperform any "hyperbike" so that doomed the ZX14R as they probably didn't want to spend money trying to make it Euro 5 compliant....It's true, no motorcycle manufacture wants to make a bike lots of people are hurting themselves on. LOL You need to build your own widow maker.
If hyperbikes were the way to go, Honda could have easily brought the Super Blackbird back and made it a beast and Yamaha never even bothered.
Suzuki was kind of bold to even make a gen 3....
The smaller CC bikes are the real sellers and that's where manufacturers spend their time on which makes sense.
That being said, we had better enjoy our large beasties while we can still get them.....