The government should define what's okay and what's not (aka regulation), and let private entities duke it out for a reasonable share of the economic value.
You can argue for improvements to the political process, but public entities do many things better than the market. For example: the fire department, parks, utilities, roads, healthcare, education.
Because the US has for-profit healthcare and it’s worse on all societal-scale metrics than nationalized healthcare in other countries. And we had for-profit fire departments and the result was poor people’s houses burned down. For-profit utilities cut maintenance of essential infrastructure to hit quarterly goals. For-profit education reinforces class hierarchy, enables grift, and results in superficial curriculum tailored for mercurial “employer demand.”
What does centralized (and politicized) regulation do better than then free market?