Is there a Greek hamburger conspiracy?

I’m not sure if this is something that’s common, but there in Southern California there’s a lot of sort of independent type burger joints that have a sort of uncanny resemblence to each other.

They are often times named the greek something or another (e.g, The Crazy/Friendly/Mad/Excited/Developmentally-challenged Greek) and have typical Fast food burgers, chicken sandwiches, pastrami, and fried zucchini. The burgers usually come with tomato/shredded lettuce/secret sauce, and combos usually run $4–6.

Every time I go to one of these, I just see that it’s pretty consistent and I know what I’m getting even though I’ve never been there before. I was wondering if they are somehow associated some how, or is there some sort of DIY make-your-own-burger-joint business plan going on?