And who would run these businesses? How much would you pay the executives to do it? Honestly it's cloud cuckoo land if you think that (a) such expertise exists in the government or civil servants - they are fucking clueless the lot of them. And private sector bosses would want private sector pay.
No mate, I can understand your frustration about the state or our public services. I share your frustration. But them being privately run is NOT the root cause of why they are shite. It's a symptom of them being allowed to get away with it, profiteering because they can.
And likewise re-nationalising them is not the answer. Not that we could even afford it. We cannot simply take them back, or no investor who had lost their shirt would ever touch the UK ever again. Even if such taking back was legal and I am not sure it would be. So we'd have to buy them back at market rates, with vast amounts of money we have not got and which if we did have it, would be vastly better spent on e.g. more teachers, hospitals and schools etc. Nationalisation is off the table.