No they dont. For example, Drake cant sell out a New Orleans show, yet he's one of the most popular hip hop artists in the world. So you're wrong.
There are other hip hop artists who sell out every show
Drake is a target audience, average hip hop lovers aren't all that impressed or into Drake since he's so teeny pop style
For instance Tech N9ne sells out every show but he appeals to the true hip hop lovers who he knows paid a shitload for a ticket, like in Houston he will invite others like Scarface etc, and he puts on a damn show