It’s not impossible. The UK has a rich history of tech innovation but it’s long since been eclipsed by Silicon Valley and its funding (which the UK can only dream of).
But the UK government's GDS team is a fantastic example of doing tech right in government. I can see an expanded government involvement in tech for bodies like the NHS that is a clear alternative to the Silicon Valley model. The salaries would never reach US levels but could still afford a very comfortable life.
Problem is that it would require the government to spend money on itself and its employees, which successive governments are loathe to do because the press will punish them for it every time.
In many ways the UK is a tragic country: top tier talent in many areas, hamstrung by political, management, financial, and media culture rooted in the 19th century, and wholly colonised by offshore owners and foreign powers.
Many of the country's assets and infrastructure are now literally owned abroad, and run for the benefit of foreign owners.
You regularly get outbreaks of talent like GDS, and they regularly get sidelined/eaten/shut down if they're not aligned with corporate ownership.