The public barely want to fund public infrastructure, for the electricity they use, the water they drink. And especially not for the electricity and water that their neighbours, or people across town, or people somewhere else in the country need.
Most people like working societies and a huge part of that is reliable infrastructure.
My guess is that real rich people love public funded stuff as it's basically free for them.
If you don't believe that's true then I'm afraid you don't know human beings. Just because _you_ do, doesn't mean _everyone_ does.
Turns out humans evolved for smaller groups than we've shoved into entire countries.