2016 in that universe is probably a very different world, with lots of different types of devices with different strengths, and a much stronger focus on cross-platform protocols.
The BBC did a fun retelling of the rivalry between Sinclair and Acorn a few years ago. Worth a watch if you haven't already seen it. https://en.wikipedia.org/wiki/Micro_Men
If anything, the 2000 should've used a new chipset instead of being the same as the 1000, and there should've been a much bigger jump in performance on the 3000 and 4000. By offering different chipsets on the high end models and the low end models, they could have captured both the high end and low end markets. As it was, the high end models were useful for the Video Toaster and not a lot else.
In comparison the A500 had one expansion slot on the side.
Arcades had Street Fighter and all the action. Consoles had the most faithful arcade ports as well as all the JRPGs. Amiga/ST had the better sound, less configuration hassles, and for a while, better graphics.
PCs had...flight simulators and spreadsheets and yuck, MS DOS.
As a personal anecdote, i got into the PC world by buying a second hand 486 (DX luckily, i had not the first clue at the time). No sound card, F if i recall what the HDD was (but just having one was a step up from floppy shuffling), and maybe 4MB of ram.
By the time i was done with using it, i had added a sound card, replaced the graphics card, added a CDROM, doubled the ram (if not more), and gotten a whooping 1GB HDD in there.
For the life of the A500 it stayed the same. I did borrow an extra floppy for a while, and that allowed me to speed up the games loading for a while, but it was pretty much a sealed unit for me over those years.
That seems like a contradiction, unless nextstep was a internal project at Apple he took with him when he left.