I shouldn't have type-cast an entire group. Clearly you can be socially inept and yet be appropriate (I was more like that too). But I also started as an employee in smallish companies and moved to founding them.

I should also note that some never seem to "grow up" - appropriateness simply eludes them permanently. If you look at Uber you have a founder that could, in theory, be a grandfather but doesn't seem to have a sense of what society condones.