2nd sentence, more money doesnt always mean better services. We only need to look at (recent) history for that
Mainly just badly managed funds.
However good your management is, if you have too little money you're stuffed.
But
A relative now retired was financial controller at a successful council. Very bright bloke, very down to earth. Left school at 16 and did night school to get his accountancy and other qualifications..
They had low council tax rates and very good services. No chance of a backhander there, any hint of it attracted an inquisition, so it didn't happen. As usual everything was contracted out, but they were very hot with lawyers crawling through contracts to make sure performance parameters were maintained, or the contractor didn't get their money. Apart from bins and whatnot, they had the best community mental health services in the country, I remember him explaining. He'd routinely take the p out of the borough I'm in, where the council tax was a lot higher.
You need efficient mechanisms like that.
He has a bit of the "Stewart Rose" about him.
Same sort of practices that should be used to get the country more productive and earning money, with high standards and investments for the long term good.
Maybe a character like John McDonnell could achieve something, but you need the carrot AND the stick, you can't just rant about successful businesses having to pay - for others' inefficiencies.