Is there a name for the type of government where the government pursues consumer protection, antitrust, etc policy by directly running one competitor in every important industry, instead of making rules for every participant?

Why would you expect this to work? State-run enterprises are not exactly great vehicles for creating competitive pressure

Blogger at ribbonfarm.com, running summerofprotocols.com, host of /gloom ☀️

So subsidize the state offering sufficiently to exert strong downward price pressure… this means you’re dampening competition not promoting it

Increase the pressure enough and the private sector become unviable