I'm having an incredibly difficult time finding diapers for my daughter. There used to be suitable diapers out there, but they aren't commercially available here anymore.
Story: The baby gets a rash when she has elastic stuff on her legs. This means that the standard disposable diapers don't work. It also means that the 'new and improved' cloth diapers with a poo-overflow prevention mechanism (i.e. elastic band around the legs) don't work. The ancient cloth diapers with a tie-system do work, but they're almost impossible to find – except second-hand if you're lucky enough to know someone who still has them.
I've also noticed this same phenomenon – must-purhase things that you don't need or want in new cars, not-so-smart phones, etc. What ever happened to consumer choice, and what do people do who can't find what they're looking for?