Well, that's the idea of Marx.
Marxism as practiced in places like, eg, Russia fell down because they disrupted the ability of the market to send and receive accurate price signals and over time that led to catastrophically misallocated resources. Many of the people who want socialism seem to support disabling said price signals, because they are unfair, which is why socialism is so dangerous - those price signals are very important. However, as long as they face the same risk of bankruptcy as everyone else, workers co-ops with the ability for outsiders to invest are probably a superior model of ownership.
This is extremely ahistorical. The fall of the USSR was due to Gorbachev's decision to introduce "western" markets into Russia and Yeltsin's opportunism. Growth and stability weren't flagging in the Soviet Union until they attempted to privatize.
Viewing the health of a nation on the growth of their income isn't necessarily telling the story. Soviet inflation was almost unheard of save for hyperinflation shortly after the revolution, and hyper inflation after the collapse. Also as investment wasn't as much of a driving force since the economy wasn't private, so infinite growth isn't necessarily a good indicator of the state of things.
Many markets are stagnant and do not offer healthy competition. There's a fair share of markets that still offer healthy competition, but from my perspective, it seems like the end goal of market optimization almost inevitably leads to monopolization which always leads to stagnation.
True competition and an informed/economically conscious consumer market are key requirements to this signaling process. We don't have a lot of either in many markets.
In reality, humans are frequently lazy, corrupt, incompetent, etc., and so in a market where there's healthy competition, the presence of competition provides a check against these problems, giving consumers an alternative when one player screws up too much. With a monopoly, there is no alternative, and no incentive to do better, unless it's being heavily controlled by the government which has to respond to voters.
I'm not saying otherwise. In fact, a lot of Marx ideas were good. He also famously said "I'm not a marxist".