It is because companies behave like communist states and are allowed to have dictators, most of the times with power over life and death issues of their citizens/employees.
Or maybe try moving away from corporations and towards cooperatives.
Problem is, making coops popular requires ambition and dedication from the workers, because there will no capitalist looking to make a profit to jumpstart the business.
...You do know that communism advocates for a society where control is something done in collaboration with others? Because China, or the USSR calls itself communist does not mean it is. A simple reading of Marx & Engels' work would clarify that.
Thus we invented advanced concepts to avoid this- like - everyone holds there breath- taxes to milk corroding power accumulating back into the system as a whole - and parliament democracy, which basically consists out of a bonemill for wanna-be dictators, grinding one another to dust in a weapon less fight for power.