Presumably a combination of survivorship bias (we are most aware of the successful tech companies with asshole-founders-and-foosball-tables-in-the-lounges, and

Presumably a combination of survivorship bias (we are most aware of the successful tech companies with asshole-founders-and-foosball-tables-in-the-lounges, and not all of the unsuccessful companies with the same) and fundamental attribution error (we think having an asshole-founder-and-foosball-tables is predictive of or causally related to being successful).