Samsung

It does track if you realise the category of phone does not have much demand. Foldables are a novelty that many people will be discouraged from buying due to issues (perceived and real).

It’s a waste of money to improve these phones if the market isn’t there. It’s much better to focus on the markets you have a reasonable chance of growing sales in.

I imagine all smart phone categories are fairly stagnant now. Phones have been more than good enough for many years now that replacing them is more about replacing worn out unsupported hardware rather than getting better performance and features.