I clearly stated you need more than just a single owner, you need a single owner that is competent and cares. We can't just snap our fingers and have that, but I'm hoping to at least help people to start thinking about it.
So you want to have a benevolent dictator, basically. If you look at actual dictators ('single owners') and the ratio between "benevolent" and "not-benevolent" you'd see that those are pretty rare. Singapore had one. Steve Jobs was one. But usually, I guess, absolute power corrupts absolutely.