I just cannot suspended disbelief that people who all make over $100k in their professional lives would live in the same apt for 7 years, wear the same goofy clothes, and in general act that way. They are top earners in the US based on their jobs and yes, they do anything they want to because of their income, it seems odd they've all just stagnated in the same building for the better part of a decade.
I would venture to guess there are loads and loads of $100K job earners in Pasadena that live in apartments just like that for 7+ years. Obviously they are going to wear goofy clothes and act like nerds because the show is about a group of friends that wear goofy clothes and act like nerds.
By that same logic the TV show Bonanza was also flawed - I cannot suspend disbelief that the Cartwright's get in a gun-fight in nearly every episode, someone always dies, and it happens to never be them....how realistic is that?