They've been coasting for too long now they don't know what a work ethic is anymore.
Having the money to pick and choose who you want and who you don't want, having a manager and a chairman who controlled the Premier league, having a choice of which referees they would like and binning those they don't, having a media full of spineless sycophants who knew one word of criticism against the cartel leaders would mean instant dismissal. You have all that and you will get your own way every single time you play - no competition would be allowed to challenge you. That's what it was like for them under the pisscan, with Gill overseeing everything else to ensure the despot had his own way.
Fast forward to today. Things have changed, they do not rule the roost anymore: to a certain extent they are almost but not quite playing on the same level field as the rest of us, something they haven't had to do for decades and decades.