I don't think this is a good argument. To be sure there has been a big jump in prices lately; we are familiar with the reasons so I'm not going to restate them here.

It happens that i just upgraded my main computer and phone, from >10 years old to >3 years old. And certainly I'm conscious of the fact that if I'd done this a year or even 6 months ago I'd have saved maybe 15% over what I paid. On the other hand, I'm also very conscious of that fact that the new gear is far more performant; the RAM is faster, the memory bus is wider, the system architecture is massively more efficient, there's specialized logic that just doesn't exist on my older machines. So I think it's a big mistake to say 'xGB of RAM costs the same now as 15 years ago' when it's performing ~10x beter.