I think his point was that accelerators have the same problems: it used to be that 18 month's ago's accelerator is obsoleted by today's due to Moore's law. This is no longer true, so todays accelerator is as good as the next iteration. Of course, I guess what you mean though, is that the future is in developing different, new accelerators for specific niches. So your future compute system is modular, with an accelerator module bus, and plugged into it cards for managing graphics, physics, fluid dynamics, I/O, crypto and so on. You could build a system tailored to your workload...
