They do over 50% of the actual work? Where did you get that statistic from? You take all the people employed by the league, the arena, the teams, the management, and you figure that the players are doing 50% of the work?
Work, as you call it, playing basketball. Practicing basketball. Training for basketball. Oh yeah, watching film.
Are they cleaning out 50% of the toilets? Selling 50% of the concessions? Cleaning 50% of the floor when they're done "working"?
They're called players for a reason.
Some of you guys have a pretty weird grip on reality.