My friend, you're giving them way too much credit.
Nobody, especially no decision-maker involved with this, has ever spent a single thought anywhere near any concept related to memory.
It just literally never crossed anyone's mind.
I suspect there will be a bit of revelation once people realise how much better AI can make software if prompted correctly. Of course a lot of slop will always exist, but things like https://news.ycombinator.com/item?id=49226923 show that it can be a powerful force multiplier if used right.