@brrrrrrrrrrrrrrrrrrrrrrrrrrrrr
[Switzerland] has efficient public services, high salaries, mindblowing public transport, excellent healthcare. And it’s smaller and more densely populated than the UK.
How do they do it ?
Mainly, international capitalism.
More specifically, trade in financial services, big pharma, gold and luxury goods.
I think that's a reasonable model which we can build on for the UK. Our economy is more complex though as we can't just do that. We need an economy that works for the highly educated/mobile/wealthy and also for those who aren't. But harnessing the UK's strengths in those areas is a good start.
(I'm being a bit mischievous, as I saw you are anti capitalism and then pointed to Switzerland as a model! I think any worldview that selects one single cause as the source of all ills, whether that is "immigrants" or "capitalism" is pretty certain to be wrong).