I'm sure every OS-maker out there has something to learn from OpenBSD, but Theo De Raadt seems incapable of acknowledging that others may have different design criteria than OpenBSD. If they wish to support their customers and gain more business, Red Hat, Apple or Microsoft, for instance, cannot make security the only factor. They have to be quick at supporting some new hardware, provide ease-of-use features and add new features or be considered obsolete very quickly. The same goes for plenty of makers of hardware products.
If OpenBSD was capable of both extreme security and the quick development mentioned above, he'd have proper bragging rights for beating the other players. Otherwise he is simply playing a different game than them.