Because every government is part capitalist and part socialist.
They are twisted together like strands of DNA. Can't have one without the other.
Most European nations are social democracies. It's a model that's working all over the place. Workers are paid well and working conditions are good. There is paid family leave and a 30 day paid vacation. Higher education is free. Medical insurance is provided. Life is pretty good for everybody.
We can have that here. And the rich will still be rich.