The expectations for sure changed a lot between year one and year three under Mike Brown. That Beam Team year everyone was just happy to be here and that team led the league in scoring which fed into the fun factor (for the players and the fans). As soon as Coach tried to establish a defensive mindset the whole thing collapsed, which has always been the M.O. for the Sacramento Kings for as long as I've been a fan. We don't hire defensive-minded players, coaches, or GMs. It's always last on the priority list. Fox and Murray seemed committed to the cause (at least until Mike Brown was fired, in the case of Fox) but two guys do not make up a team and the commitment everywhere else to playing hard on defense was wavering.
I don't see how you can expect the Coach to implement a new defensive scheme mid-season without holding extra practices. But I'm not really surprised this is what happened with Coach Brown ultimately because he's been in the league for a long time and he's been part of multiple championship winning squads with multiple Hall of Fame players on them but he'd never been part of a coaching staff in Sacramento before. We've had multiple players talk about the culture difference between Sacramento and wherever they went next. Our front office personnel, coaches, and players will all talk the talk about playing defense but the culture of lackadaisical play here is way too entrenched for one guy to break it. Not without the firm backing of ownership.