In the past when memory supply was short and then rebounded, many companies went out of business because making memory was no longer profitable.
Memory in particular ... https://en.wikipedia.org/wiki/DRAM_price_fixing_scandal
The entry-cost to getting into memory is on the order of $billions and years - you can do just about anything...
Increasing the availability doesn't mean decreasing the price ... people think those are intrinsically related - not so much.
You can get a prada shirt for $2,000 ... as many as you'd like, for $2,000 a piece. No problem. They'll make the factories go burr all night long. Still $2,000.sweeping
There's a bunch of things like this. $100 bills for instance ...
a new entrant might yield a price drop, or, it might not.
If it costs you $1B and five years to build out new supply and you think demand will not sustain for more than three years, it does not make sense to expand supply.
Instead you will maintain your margins currently and await demand to decrease back to your current supply.
This is pretty common and as others have pointed out is even more common in markets where competition is slow and lead times are long.
Ammunition is a great example over the last decade or so as political turnover caused relatively short lived demand spikes and manufacturers didn't expand supply because they knew once political winds shift, demand would decrease.
