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At least in Finland, most of the stuff that would be big is sold early, the founders take the 10M and retire to their cottages in the middle of nowhere (edit: I don't mean this the bad way, I'd probably do it too).
Without basic foundational creations/discoveries that we can all take for granted, there would be nothing for the vectoralists to build on top of.
Nordic countries have the safety net countered with a mentality that is borderline entrepreneur-hostile and the law of Jante on top of that so safety nets may be the few pro-entrepreneurship things they have. Finland of the lot is also capital poor so no huge investor funds or such.
Just Eat, Deliveroo and The Hut Group; Monzo, Starling and Revolut, from another era, there's ARM.
I'm sure there's fintech ones (not a sector I know much about) and the guy who sits near me in the office, who has an AI-healthcare startup, says the Britain is very good at those too.
The UK has an advantage here over the US in that the tech and finance sectors are both based in London whereas in the US they are split between California and New York.
In Europe, I heard that you have personao liability to your employees, libertarian-style.