@Another76543 spot on.
If you want to raise money the easiest and cheapest way is to stick a penny on income tax. Wealth taxes could also be looked at (but harder to implement); however, Starmer knows if he does that he may lose. Brits want better services, but we all feel other people should pay for them. By 2027 it is forecast 25% of teachers will be higher rate tax payers.
So there are very limited ways Labour raise money which effect not too many people and these policies hit people who can’t vote/may vote Tory anyway. The country is broken and has huge debts.
Before people go on about Tories paying their friends (not saying they didn’t), but huge sums were paid out on the furlough scheme and bounce back loans. We have saddled our children and grandchildren with huge amounts of debt.
Sunak - for all his issues -has an economically sensible policy and the economy is slowly moving in the right direction. Unfortunately, Starmer won’t be in the situation Blair was in when there was a lot more money. He also doesn’t have the social issues (gay marriage) that Blair had to make real changes.