"Storage isn't cheap" "check the [Apple product] upgrade prices"

Under this logic, RAM is still $100 / 8GB, a factor of ~4x greater than non-Apple prices. A similar coefficient is true for their SSD storage pricing.

Source: Mac Pro configuration page https://www.apple.com/shop/buy-mac/mac-pro/tower

Yes, under this logic you can't ignore the reality of a large % of users when making sweeping claims about the reality of all users.

Also don't forget the fact that many devices can't be storage-upgraded, so this pushes the actual cost of extra storage even higher