They gained popularity because they were one of the first hot dog carts in the area, if not the first. At some point, they started leaning hard into the whole hollywood thing and started naming dogs after celebs.

That could just be some savvy business moves, cause California is obsessed with celebrity or it could be some sort of front for who knows what. Given the breadth of their customer base, they clearly just sell regular dogs to the average customer. That having been said, savvy business practices and selling regular dogs to customers doesn't mean that they can't have since sold out or sold out on the back end, so to speak.

I will say this, for how well-known and popular Pink's hollywood is, there is very little information online about the original owners or their kids.