Where are those other CS PhDs looking to work instead? Am very curious to know how these highly in-demand people make decisions about where to work and the impact their work can have.
At Oxbridge, DeepMind is definitely the preferred employer, alsmost nobody is interested in an academic career, finance is not especially popular but always an option in London, hedgefunds heavily recruit. I would say next popular option after DeepMind or big tech in Silicon Valley is London startup scene for many.