That's why a hardware change would be a step towards a change. If the metal was less von neumann and more Turing/number theoretical approach, it'd be a deep change.

So far the limitation of what's practical were/are the driver of industry.

And von neumann did solve a real problem they had back then. These days were facing a software engineering problem which is more high level, and most faculties are triaging the situation - but I can't really blame them. Many unis lack the funding for ground breaking experimental work - and the likes of Turing/von neumann/knuth/dijkstra et Al, only come once a generation.