This is what the late African-American lesbian feminist poet Audre Lorde wrote in a 1984 essay:

"the master's tools will never dismantle the master's house. They may allow us temporarily to beat him at his own game, but they will never enable us to bring about genuine change."  (p. 112, "The Master's Tools Will Never Dismantle the Master's House," In Sister Outsider: Essays and Speeches, 1984.  Freedom, CA: The Crossing Press.)

I guess this wasn't intended as a warning to the Marxist and Sraffian economists.  But it should have served as one.  Look at where they are now.