Privatisation and then lack of regulation has absolutely screwed over this country.
The profit motive was supposed to make the companies more efficient, but it really doesn't work.
Look at the trains- on very few journeys do you actually have a choice of route and company to use (only really cross country vs via London). So instead rail travellers are just having to pay through the nose to give extra cash to shareholders. And I know that lots of us who are lucky enough to have private pensions and stock ISAs are shareholders, but there would be plenty of other shares available without privatised rail, energy etc.
Plus, the rail network was also expected to be money making whilst roads are funded via general taxation ('road tax' hasn't been used for roads for years). So rail fares (and all public transport) is hugely expensive and contributes to more congestion on the roads, which has economic and environmental costs. Franchises are regularly reviewed which disincentivises companies from investing in new trains.
With energy, there was competition re who you purchase energy from, but it's all from the National Grid. Lots of the bigger energy providers also generate energy too. So privatisation could potentially be good for the consumer IF the supposed efficiency that comes with the profit motive cuts costs more than the profits add to them. However, recently Ofgem massively took their eye off the ball. These tiny energy companies were offering fixes when they hadn't actually secured the energy yet and didn't have extra finance to cover increased costs,so they couldn't deliver and went bust. Consequently every household in the country will be paying the price of that.
Post financial crash there have been numerous regulations for banks and insurance companies to make sure they can meet their obligations. Yet there was nothing in place to ensure energy companies could.
Council housing was effectively privatised by being sold off (lots then ended up as BTL), so tax payers are forking out large amounts of housing benefit to pay private landlords. And housing costs (rental or purchasing) are rising out of the reach of many people.
When will Brits learn that the market cannot be trusted to regulate itself? Especially when so many of our Tory politicians and the party itself are being funded by private companies and foreign 'businessmen'. Privatisation without adequate regulation has not worked.