..& they proportionally get rewards in form of block reward (which is with time meant to be slowly replaced by transaction fees). in Communist business (worker coop) its same principle
Each worker should get rewarded (in form of a wage) proportionally with amount of work they have done. If someone doesn't do any work, they should get no reward (like share holders)
Workers should democratically and collectively make all decisions, like any healthy community does, and decide what to produce, how, how much each person should get paid etc.
Naturally some jobs are more demanding them others, and this should be taken into account, point being is, there is no 1 person that makes all these decisions, but all workers do.