Occasionally, companies try to organize with market principles internally, with divisions charging each other for services performed. Sometimes it works. Sometimes it turns into Sears.
Actually, it's not. State capitalism has absolutely no relation to how workers were used and abused by communist regimes.
For example, the following is from "The Failure of the Working Class" by Anton Pannekoek in 1946:
The workers of the world nowadays have two mighty foes, two hostile and suppressing powers over against them: the monopolistic capitalism of America and England, and Russian state capitalism. The former is drifting toward social dictatorship camouflaged in democratic forms; the latter proclaims dictatorship openly, formerly with the addition "of the proletariat," although nobody believes that any more.
Actually, it's not. It's a page taken out of the old soviet playbook, where factory workers were pushed to increase production through means other than pay increases or productivity rewards, and played with psychological tricks such as appealing to nationalism or even conformance with the regime's ideal.
The exploitation trick is as old as time, but it's not specific to an economic system.