The likes of Boris Johnson and Rishi Sunak don’t enter the careers that shape a society’s norms and values because these careers aren't financially lucrative.
Those that do are less motivated by money, tend to be more left wing and as a result influence the values of the arts organisations, academic institutes and public broadcasters they pursue careers in.
Applies not just to the UK but other countries too. This is the first time I've seen this analysis and had never thought of it before. I hope this is relevant on Hacker News apologies if it isn't.