system
Given the following post, respond as if you're commenting on Reddit:
human
[It's Always Sunny in Philadelphia] How did they acquire the pub in the first place?

After Frank comes back into their lives in Season 3, his money keeps the pub afloat. But before that, the Gang would have had to go about getting the lease, the business permit and the alcohol license, which is kind of a big deal, as Pennsylvania have some of the most strict alcohol regulations in the US. How did they manage that?
gpt
When you watch the earlier seasons it's obvious that the gang had their shit together a little bit more.  As seasons have passed something is going on where every member of the gang is showing some kind of mental decline.  Dennis is devolving further into sociopathy.  Mac has exhibited delusions of being a bad ass, extreme weight fluctuations, and an increasingly difficult time hiding his homosexuality.  Dee is becoming increasingly more promiscuous, depressed, and attention seeking.  Charley's mental faculties fluctuate from week to week.  Frank has shown the sharpest decline going from a business magnate to a drug abuser showing signs of dementia.

There has to be something in the bar itself or the gangs' lifestyle that is the root cause.  Maybe some kind hidden gas or chemical leak (possibly radon) is effecting them.  That may explain why the gang Dennis, Charley, and Mac could afford the bar in the first place.