This is more or less what we have now. Even a very pedestrian laptop has 8 cores. If 10 years ago you wanted to develop software for today’s laptop, you’d get a 32-gigabyte 8-core machine with a high-end GPU. And a very fast RAID system to get close to an NVMe drive.

Computers have been “fast enough” for a very long time now. I recently retired a Mac not because it was too slow but because the OS is no longer getting security patches. While their CPUs haven’t gotten twice as fast for single-threaded code every couple years, cores have become more numerous and extracting performance requires writing code that distributes functionality well across increasingly larger core pools.