Not sure why communism was brought into this, but your repetition of that common trope is misinformed. A planned economy theoretically works just fine as long as external adversaries aren't manipulating the global market to your detriment, deliberately excluding you from global bank dealings, and aren't putting a bunch of pressure on you to develop a massive military budget overhead. Without these influences, the inherent cost in running a communist economy is lower than a capitalist one. Why do you think communism was villified so much pre-Stalin? (During and post-Stalin the USSR got a lot of flak, and rightly so, for breaking up citizen collectives and killing millions of its citizens.)

Also not sure where the "failed business" idea came in here. It seems like you're just swinging your sword at the closest straw men.