Had the GDR given everyone the equivalent of a Volkswagen (as an example) I believe they would have succeeded, but a Trabant you wait a decade for? And the Volkswagen was not for “some”. Very few German workers would not be able to afford one. You have to look at the standard of average people to learn something about the viability of a society. A socialist society should avoid big differences I agree, but not be overall worse materially than capitalism (this includes spare time which capitalism hardly provides). And the people in eastern Germany were not happy about having cars at all, because they could see and often had family in the west living a much better life. Just because the covid response of my country could be worse I’m still jelous of China because they show very clearly that it could be much better.
For western workers “real socialism” looked poor and restrictive and utterly unapealing.
Strong Dark Knight rises vibes. Getting rid of rich people and police means also getting nuked. The ony thing keeping us from nuking ourselves is that it would destroy capital.