> the state is usually a much more sloppy investor
I don’t find this to be true
The state invests in important things that have 2nd and 3rd order positive benefit but aren’t immediately profitable. Money in a food bank is a “lost” investment.
Alternatively the state plays power games and gets a little too attached to its military toys.
Yeah, our use of our military force provides some of the most obvious cases of "bad investment". Vietnam, Iraq, etc
And there are many others that might've been a positive investment from a strictly financial perspective, but not from a moral one: see Banana Republics and all those times the CIA backed military juntas.
State agencies are often good at choosing right long-term targets. State agencies are often bad at the actual procurement, because of the pork-barrelling and red tape. E.g. both private companies and NASA agree that spaceflight is a worthy target, but NASA ends up with the Space Shuttle (a nice design ruined by various committees) and SLS, while private companies come up with Falcon-9.