When Mises and Hayek were making their argument against central planning and command economies, their focus was Soviet communism, that is, Marxist-Leninist Stalinism. Thankfully, that historical period is now over and has been declared a failure.
Some followers of Mises and Hayek now seek to apply that critique to contemporary systems in which government is an institutional player economically. Does that original criticism hold? Lord Keynes argues, no.
Social Democracy for the 21st Century
Mises on Rational Economic Planning under Syndicalism and “Economic Calculation” in Keynesian Economies