Lenin called the new system State Capitalism and talked about "control, supervision, and accounting" as being the solution to the country's problems [1]. Even Marxists warned about the totalitarian nature of Lenin's project. These essays by Chomsky explore the topic: The Soviet Union Versus Socialism [2], Objectivity and Liberal Scholarchip [3]. Chomsky gives Luxembourg and Pannekoek as examples.
[1] http://marxistsfr.org/archive/lenin/works/1917/ichtci/02.htm...