I think I used autodesk software more than anything else except Windows, and it never dawned on me it was founded by a person with a vision. John Carmack and a lot of ID staff were known among gamers of the era, but I don't think I know any CAD person who knows John Walker, or graphic person who knows Knoll bros behind Photoshop. Made me look up Simonyi who designed Excel. Obscure people behind software that keeps the world turning.