You say that, but an awful lot of people doing maths in industry are physicists - mathematicians are far more likely to stay in academia. One of my first jobs was writing trading algorithms in the early 2000s - I was a physics student, most of the dev team were physicists or chemists. We got a mathematician in to consult on some gnarly cluster analysis - but after a month he presented us a white paper that was very, very pretty, and described our problem mathematically very succinctly - but totally unusable as it wasn’t so much a solution as a beautifully defined problem.