Mistral co-founder and CEO Arthur Mensch on open source AI and why no company will want its intelligence running on someone else's grid: "If you assume that the entire economy is going to run on AI systems, enterprises will just want to make sure that nobody can turn off their systems." "It's the same way if you have a factory and you connect it to the grid. You want to make sure that nobody's going to turn off the grid because they don't like you... that's one of things that open source…