Think back to the Macintosh’s beginning. It has always been about simplicity: Simple to setup out of the box. Simple to use by non-computer users. Done.
Moving forward, Apple’s take on Macintosh simplicity expanded much further to its construction: If there’s no chance to upgrade/expand, the device is yet even more simple.The way you buy it is the way it remains for life…usually.
Lastly, as technology advanced and made it possible to create a nearly ‘solid state’ computer (thank you SSD and no thank you the need for an internal cooling fan(s)), we are now just south of Apple’s vision of Computer Nirvana: No moving parts. No upgrade opportunity. No user-serviceability. And (hopefully) no need for it to be serviced.
I remember my first solid-state, transistor radio. One-tenth the size of my desktop radio. Had good sound for both AM and FM, could accept a mini-earphone, and ran for a month of periodic use on two AA batteries.
Apple’s vision and quest to this end will remain…as long as there’s an Apple to do it.