Why should floppy disks be a problem? Even if they are fantastically out of date, if they can be maintained as a niche legacy technology, they're not a problem. They won't suddenly stop working, it will just slowly get more and more expensive to get the parts. Supply chains are magic - at the right price, someone will always be willing to make more floppies or drives. Of course that price might be $500 per floppy and $50,000 per drive...