I cannot prove it, and this is entirely anecdotal, but my friends and I have observed it first-hand from VC dealings and friends in the right UK circles. Inherited generational wealth and class in my experience powers UK investment, particularly in the start-up scene, much more than in the USA. Of course, there are some exceptions I can think of in the UK but it is very much tied up with the class system there and understanding this makes life easier. The same situation affects other European countries to some degree, and many people I know have had to go to US VC firms to get funding. I have spent a lot of time working in all of these countries to some extent and the UK class system seems to be increasingly stifling. YMMV though.