To wit, I only ask that some things remain separate
A "service" like a city street, city policing or emergency medical care is taken to be the responsibility of the government, and is "free" in the sense that we don't pay for it every time we use it. But it is paid for FULLY by taxes. We feel it when we declare incomes and pay taxes. It should then be limited, so as not to interfere unduly with the lives of citizens it is supposed to serve.
Banks, railroads, mines, agriculture, manufacture, airlines, pharmaceuticals, telecommunications, stores, malls and so on are supposed to generate profits. So, there should be full competition, there should (ideally) be more than one of them per airport, per country, per region, per city, per industry competing actively for the same niches. There should be no privileges; anybody investing legitimate money is not hindered by the government. And all the "bailouts" should be limited to making the buyout and takeover of failing ones an easy business.
A for profit company, quoted (or not) in the stock exchange makes its owners or shareholders wealthy. Nothing wrong with that, we understand that it is THEIR RISK and THEIR PROFIT. Whoever has enough money to buy shares has a surplus of money; should at least be debt free, or should not depend wholly on risky shares bought on borrowed money. It is THEIR RESPONSIBILITY. The idea that it is ethical that the investor or owner "needs" my tax money, or the continued hindrance of others by the government we all pay for to survive and prosper is no better than accepting that the Mafia "needs" my extorted money; which is particularly odious if they use that money to pay henchmen that ward off competitors and prevent me from choosing.
Using the might of the government we all pay for to uphold monopolies (for example; all-sweeping patents, particularly if they drag on for more than say 10 years) or subsidizing the inefficiency (or losses) of for-profit companies is immoral; because they provide no "public" service, they provide a commodity that is paid for, fully.
It is like gambling and only raking in wins without paying any losses because they are paid for by morons like us. It's like betting on a roulette with only one color. Niiiice! I want to gamble like that, too... Would have to make an enormous effort to lose!
If a for-profit society has privileges according to it by law, it is robbing the citizen explicitly and implicitly to give money to people who already have access to a lot of it. Explicitly because tax money is being spent on enforcing unjust laws and decrees, and because tax money is being spent on them directly. Implicitly because I, the citizen, find it difficult or impossible to do what I would. Which is showing them THAT finger (original meaning: I can still draw a bow!) and giving my custom to a competitor selling a better or cheaper product.