to be fair, even if they could, the big three memory manufacturers have been in enough scandals in the past that it's basically guaranteed that they wouldn't
but yeah they should just build more RAM, surely chiseling glass-rock can't be that hard to scale?
Serious answer: it takes a long time to make a fab
Mostly unserious: doing so would mean allowing general purpose personal computing to survive, not force everyone onto cloudy neo-mainframes.
Why would they when consumers (companies worth lots of money) are willing to just pay a higher mark-up and manufacturers can allow low supply to act as a price multiplier, growing the problem with every passing month and strengthening the power of the RAM buyers as entrenched compute rentiers?
This is half a joke because I know nothing about economics and probably fundamentally misunderstand something but it's my read as someone with 101 knowledge