On my experience, every time I’ve been in the situation of looking for more capacity because the software requirements have gone up, I’m 1-2 generations of DDR behind and it doesn’t really make sense to do the upgrade anyway.

How often are you actually going to do that though? My desktop from 12 years ago has 16GB of RAM and Apple only just upgraded their base specs to 16GB.

Ok granted my new desktops have 128GB, but that's massive overkill so I can have like 12 VSCode's open. For normal people 16GB has been the sensible amount for at least a decade.