Earlier quoted context omitted.
Not sure, as I don't live in SF, but I know that not all start-ups are in SF/The Valley even if the VC money is raised there. In the UK, they're disproportionately concentrated in London. In fact the UK government has encouraged many of them to set up around Old Street / 'Silicon Roundabout' (sigh). That area is only accessible by public transport, whereas SF/California is accessible via cars, so the choice of where…
It’s not clear at all that the vast majority of people in London commute by public transport. The sources linked below, one during the pandemic in 2020, and the other a series of estimates, suggest the figure is more like 25-35% but I wasn’t able to find something more conclusive. [1, 2] More to your point, I agree that SF or at least the Bay Area has a higher dependence on cars, but it’s also more geographically con…
Though specifically tech: offices are in central London - Google at King's Cross, Apple at Battersea, Facebook near Oxford St. Old Street and Hoxton for start ups. And of course fin/fintech in the City, Canary Wharf, and the West End. That's 10s of thousands (if not 100s) of developers concentrated in around London.
Microsoft in Reading 20 miles outside London is a bit of an outlier.
No one drives to any of those jobs. And the talent pool for those jobs is centred around London and London transport.
And then if you want to raise VC you need to get into the City or Canary Wharf for meetings - they won't go to you as you need their money. And then they'll be interested in 'where are you set up, and where will you get your talent from and grow?' - I can't recall any significant tech company that's inside the M25 and not in Central London.
The "Microsoft UK in Reading" equivalent towns in any other direction than the M4 would be something like Maidstone (Kent, SE), Bishop's Stortford (NE), Milton Keynes (NW), Crawley (S). None of those have any significant tech companies. Weirdly, Guildford (SW) does have a tech scene partly because some gaming companies set up there in the 1980s and 90s.