Maybe, sort of???
But to think that for 20 years...not one of those teams "worked hard" and all the coaches were lazy asses is probably not totally fair.
Most of those players don't get to that level without working hard and most of those coaches don't just "luck into" those jobs (except Riley, who is a human lotto ticket)
I think it is probably fairer to say that it was a combo of less talented players, less amazing coaches, not working as hard at times and some bad breaks.