This has already happened. I already gave you empirical data on the success of Marcora law in Emelia-Romagna. Yes it stimulated the economy. Yes people became happier. Yes that region with 30% GDP coming from worker cooperatives is more resilient during economic crashes that affect the rest of the country. No they did not collapse into inevitable dictatorship.
It should be simple to grasp
1.government spends money
2. businesses are created with that money (buying goods and services from other business)
3. business hire workers who produce goods and services (economic activity)
4. workers are paid, taxes are paid, and those workers go and consume more from the economy
"This has already happened." This what? I already responded to your single go to "Marcora laws". This is not empirical data that Socialism will stimulate the economy. First of all because the country is not Socialist. Second, even if it was, Socialism can coast on the fruits of the previous Capitalist system for some time until it fails.
This is the lie Socialists are best at selling. This is why I said Socialists are like an 18 year old with a credit card. Sure you can live off of a credit card and not produce as much as you consume for a little while, but eventually the debt comes due and your lie collapses.
It should be simple to grasp
1. Government has to take that money from workers by force
2. Businesses are already created with that money
3. Economic activity is already stimulated because we are operating under Capitalism
4. Workers are already paid and consume more from the economy