Recent example from sweden: Privatisation of the apothecaries. Used to be a fine government monopoly bringing service to the entire country. The right decided that was bad and that it needed to be privatised so it could be more effective.
What does more effective mean? Well, here are the effects so fsr:
1. Less service. Apothecaries flock to the cities and leave the countryside untended whereas the old govnopoly covered the whole country. Private business claim the countryside is unprofitable and that they can't be responsible. Government has to pay private business huge extra support just so they don't close down the venues the old govnopoly had no issue keeping open. Extortion is pretty effective though.
2. Less safety. Sales of expired or otherwise unhealthy or unsafe materials have increased. But hey, selling unsafe goods is more effective than throwing them away.
3. Less stock. Apothecaries no longer carry the amount medicine they used to. Shortages of both common and rare medicines are constant. Hope you'll never need your penicillin in a hurry. It'll take 2-3 days before it comes in. It's just not effective to keep a stock before you know what people will purchase.
4. 90% of all stores are now beauty/make up and candy. Sure, the old apothecaries carries beauty products too. They even had their own brand, actually. Aimed at people with sensitive skin and such which can't buy the usual stuff sold in supermarkets or beauty stores. And I guess they sold chewing gum and salivators before too, that's kind of candy-like I guess. But it turns out that just stocking beauty and candy products is more effective than stocking medicine.
Net result? The tax payer pays more, and gets less out of it. But it's more effective for the risk-capitalist businesses than owns them and profits off of it, while moving said profits too tax havens so they don't benefit society. Leaching hard earned wealth away from Sweden every day.
The main phone company and the only one that has regular copper landlines was private and worked fine too. Now, well, I have more than 3 years without service at home.
Our once-government phone company just decided a few years ago (I posted about it here on the forums) that copper lines was just too expensive to service and that they'll be ripping the lot of them out of the ground, starting of course with the most fringe countryside that has the least mobile phone coverage and need landlines the most. Landlines aren't effective enough I guess.
My own grandmother was one of the people left with no service. Her fucking health/help needed alarm was tied to that landline too.
So fuck private ownership, and to hell with these insipid false claims of effectivity. With government ownership you get insight, you get responsibility and accountability, and most importantly
you get what you pay for. Private ownership only benefits private fat cats and liberal city-living shitheads. I'd rather measure effectivity by how much something benefits the people rather than how effective it is at stuffing a capitalist's arse with the people's tax money.