This is a different thing. It's because it's aged as a cheese wheel in controlled conditions, when you buy it, it's not a wheel anymore, it's been opened and you buy a wedge, hence it's open to contamination.

It's still unlikely for a 7 year aged cheese to go bad in two weeks unleass you store it unrefrigerated, but if you vacuum seal it, it will last a long time.

It tasts better before it spoils? Pffft please, who told you that?

Dry-aged beef has spoiled. The trick to it is that you need a fairly large piece, like a whole leg or side, and then you trim off all the bad stuff on the outside. More simply, they don’t butcher it then age it. If you go buy a piece of dry-aged beef it’s gunna act a lot like any other piece of meat but if it hadn’t been butchered you could just keep aging it beyond when this individual piece would have gone bad.