Another thing that would help solve this is more regular exercise, and this is indeed a solvable issue, but probably not by the private sector; the government could prioritize support for modes that are healthier (walking, biking, even transit since that usually involves walking too) than driving. The Netherlands would be a leading example here, their rates of walking and biking for transportation are very high.

Yes people can exercise as its own thing too, but realistically it's way easier to get most people consistently exercising if it's something they're doing as a part of their regular daily activities.