It's a question of perspective. I've spent my life in countries where I've seen my taxes being spent relatively well, I feel the benefits of it daily both as a private citizen and a founder. Everywhere I've lived, when transport, utilities, healthcare and education, even part of the media, were publicly managed, they were simply better and cheaper.
But I understand that this is not universal and that most governments don't operate effectively for their taxpayers. And that, yes, if the whole system is set up for it, private solutions can also thrive and be superior. I suppose it's hard to privatize public services effectively in an ecosystem that doesn't support private enterprise as much.