
These debates about what is mainstream and what is commercial are just pointless imo. There are different levels of 'mainstream', depending from the size of the audience. Ofc hardstyle is not as mainstream as Dimitri Vegas kind of stuff, but Dimitri Vegas kind of stuff isn't as 'mainstream' as The Beatles, right? Also hardstyle is way more mainstream then Black Metal and Black Metal is also way more commercial then let's say Drone Metal.