Your assumptions are completely wrong, and it only shows that Apple target customers are not really doing any kind of serious computing. Sometimes your processes are not CPU bound at all, sometimes they are I/O bound. Sometimes in RAM caches can increase performance quite a bit etc. This means swapping HDD and putting faster SSD is enough to speed certain things up. Also, updating RAM only is enough to speed things up in certain other criteria.
Besides it is well understood in technical circles where Apple is headed. Make no mistake. Their goal is to kill general purpose computers, and replace them with appliances they control.
Besides it is well understood in technical circles where Apple is headed. Make no mistake. Their goal is to kill general purpose computers, and replace them with appliances they control.