That's security by obscurity and in the computing world this strategy has shown to fail. In other areas of life obscurity gives you advantages like in military

That's security by obscurity and in the computing world this strategy has shown to fail. In other areas of life obscurity gives you advantages like in military conflict, but not here. Furthermore, an OS with only one or only few users would have to go through a lot of extra testing compared to the free testing that "popular software" companies are getting. But your comment made me think about why there isn't much going on in luxury computing. As in: where are the raytraced photorealistic nvidia DGX games. Probably too small of a market but I don't know. Do rich people play a lot of games? Or do they rather prefer real life because they have the resources?