At least for quantum I think I prefer ISC. Much easier to talk to people.

All in all, IMHO, Jensen statement is in a superposition of negative and hype - depending on what you mean by very useful.

It's not crazy to think QPUs will have a similar path, where some narrow, unreliable, use-case can be obtained. In 20 years those might be less narrow. But probably still a very long way from being ubiquitous — just like GPUs…

Also, read some reports on how difficult it is to run large GPU clusters over time. In fact critical systems on e.g. boats, last time i checked, cannot use GPUs as they won't get the required reliability ratings. None of this has stopped Nvidia’s GPUs finding various “killer apps” over 2 decades.

In 2019-2021 I was working in computer vision applied to videos. We tried to use deep learning to extract real-time information from video, all on GPUs. The cost of GPUs, and DL problems, completely killed that field. From what I see people have largely moved away from the approach at the time.