I'll start with the most glaringly obvious to me.
Frasier's money seems to be inexhaustible, he constantly buys the most outrageously expensive things ( e.g. A four star restaurant) and is never worried about it, even when he's been out of a job for months, except the one time when his accountant warns him about his spending and it doesn't have any consequences anyway.
Bull-Dog runs a show that's much older than Frasier's and most of this time he's been living rent free at his girlfriend's place, and it seems like he eats peanut-butter sandwiches when Frasier eats caviar. Remember the time when he's raiding the vending machine because he has people over when Frasier throws lavish parties all the time? He should have a fortune in the bank and yet he's out on the street the day he is fired, going as far as accepting a twenty as a parting gift from Frasier before the latter changed his mind and let him sleep over instead.
That's a little over the top for me.