Look at the background of those researchers: Demis was cogsci phd (and he is a general intelligence that can work on a wide range of scientific problems) and John Jumper has a masters and phd in chemistry. Their advisors and coauthors included some of the best-known ML people who worked on protein structure prediction previously. Personally I think they should have got the biology one, but they weren't unqualified scientifically speaking.

A Nobel Prize is an amazing accomplishment.

It is not a profitable quarter.