Why not create Utopia?
There are different ideas of what Utopia might be like, Ug.
The real problem is that, until the early 1970s, our currency was backed by gold and silver. So if the country ran out of money there was no option but to borrow it from a third party. Once we came off the gold standard there was no limit to what the government could issue, so long as the money issued had the confidence of the people using it for transactions. That was both domestically and internationally. But, the full implications of this weren't understood by politicians or, I think, many economists. We needn't have gone cap in hand to the IMF as Callaghan's government did. We could have just issued more.
So, we were all ready for Thatcher's 'handbag' economics in the 80s because it chimed with the beliefs about the country having a finite amount of money, reinforced by the IMF episode.
She was absolutely wrong with her statement that there was 'only taxpayers money'. No government in recent times has existed solely on tax revenues. and all our money is initially issued by the government, via the Bank of England, or by commercial banks under licence from the BoE. If the money didn't come from the government nobody would have any to tax!
Taxation is a method of making sure that there isn't too much money swirling round the economy and causing inflation. Taxation destroys excess money.
It's a mind blowing concept, I know. But it's absolutely true.
And it's true that governments are limited solely by their own ideologies. Tories don't like public services, they'd rather everything was privatised so people could directly make money from them. So they don't put enough money into them to run them effectively. And they justify this by Thatcher's 'taxpayers' money' mantra.
Labour would go for a mixed economy, funding public services which would inevitably support private enterprise. It makes sense to me... But they are stymied by the 'How are you going to pay for it?' question and painted as profligate.
I don't know about the LibDems, perhaps varian can tell us. But they did support needless austerity.