Indeed. Stalin effectively ended the NEP in 1929, eliminating private ownership of farmland and collectivizing agriculture under state control. By 1931, he had reimposed state control over all industry and commerce [0][1]. And thus came the Soviet famines of 1932-1933 [2][3][4].
[0] https://www.britannica.com/event/New-Economic-Policy-Soviet-...
[1] https://en.wikipedia.org/wiki/Collectivization_in_the_Soviet...
[2] https://en.wikipedia.org/wiki/Soviet_famine_of_1932%E2%80%93...
[3] https://en.wikipedia.org/wiki/Holodomor
[4] https://en.wikipedia.org/wiki/Kazakh_famine_of_1931%E2%80%93...