Like sure you could in theory see every document I've ever signed if you have a warrant for BankID servers, but you could probably glean most of that if you had a warrant for the banks servers anyway, so it's not really a new capability.
Dead Comment
Consequence of the above is that marketing and anecdotal evidence are much more influential factors in purchase decisions than quality of the product. Using marketing campaigns to brainwash people is significantly easier (and cheaper) than improving a product enough for them to notice – especially if the product already has a zombie customer base that chooses a familiar brand out of habit rather than merit. We have built a world where money is valued over value, and making better products is often a terrible business strategy.