Communist countries aren't the only ones with publicly owned utilities.

(The US actually has more public utilities than the UK.)

No, but communist countries were the poster child for "public owned".

To a degree you can do it, have the state own companies. But it will kind of be economically inneficient, high position employees and some politicians will steal money. No one will have the motivation to push farther.

every successfull passenger rail in the world is designed and run by government

That's not an accurate way to describe HK MTR or Japan Rail and it's definitely not accurate for Brightline.

Most US transit systems are bad because the government puts even more effort into stopping them from working (via bad land use, incredibly slow decision making, power-harassing Andy Byford) than it does operating them.

So in yourcideology it is wrong for governmnet to invest i to economy directly and it is wrong for government to give money to individuals for them to invest it

It is only acceptable to give money to corporations.

Seems very convenient and totally unbiased

So I go and register an LTD company now I am eligible for free government money.

You seem to be imagining a lot of things I didn't say.