Wannabe communists ask this question. Given that during COVID-19 coronavirus pandemic in the USA, many people lost their jobs, but somehow the “economy” is doing OK. Here is my response:
Most of the “economy” as you call it, has already been nationalized and is part of the state.
When the state says the “economy” is not doing well, what is saying is the state owned enterprise is not doing well.
The Federal Reserve is already the ~3rd largest holder of the LQD ETF which holds all the investment grade corporate bonds of USA.
The shadow economy on the other hand is the real economy. The more you participate in shadow economy the more real economy you create. Ignore the state. Hide your transactions using something like Monero.
Me in Words 
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