Pre privatisation it took weeks or months to get a phone line, and you got a limited choice of phones - you couldn’t buy them elsewhere.
Pre privatisation the UK car industry was a basket case. Now it’s successful, albeit mainly foreign owned, and employees more people than it did back in the day.
Pre privatisation British Airways was a basket case with appalling customer service that lost money. Now it’s a commercial, profit making businesses. You get the customer service and product you pay for though, unfortunately!
Pre privatisation trains were old, clapped out and dirty, and the whole thing lost money. You had limited choices of fares. Nowadays, on the whole trains are relatively modern, air conditioned and a whole lot better at actually running, except when they’re on strike which, fortunately, happens far less than it did when they were nationalised. Rose tinted glasses in play if anyone thinks that the service then was better than todays, and it had more accidents (employee and trains)
Pre privatisation airports were dirt, old, run down places. Now they are, on the whole, modern and well invested. And too busy! But they are now net contributors to the exchequer.
Pre privatisation British Steel was costing the taxpayer over £1 billion a year, on a turnover of £3 billion.
Water and sewerage industry was a pointless privatisation, on the whole. And I’m not sure privatising electricity distribution was sensible, though on the generation side huge amounts have gone into renewable and alternative source energies than would have been unlike to happen in a state run business. But we have lost the strategic planning, as OFGEM or whoever is responsible (some form of quango) have failed, and been let down by the planning system as well I expect.
Some analysis post privatisation showed that in the year to March 1980 the 33 businesses that were privatised cost cost the taxpayer just under £500 million (£2 billion in todays money), and post privatisation in 1987 the same companies contributed £8.4 billion (£23 billion in todays money).
So for most, if you lose the rose tinted glasses, service improved and the taxpayer was way better off year on year, ignoring the one off receipts that also averaged £3.5 billion a year between 1984 and 1994 (a total of around £80 billion to the exchequer in todays money).