FAFD - I dunno what you mean by loop based techno? Techno itself is pretty much based on repetitive rhythms... And whether repetitive sounding or not, its an awesom form of art and expression. But does it entertain the general public and punters? NO. Not really. You have to "get it" to like it.
Anyway, the music itself may not be the problem. There is so much quality and variety around. Especially from the younger guys.
The fact is it just isn't popular right now. People don't market it and people don't know of it. It's just music and to anybody who isn't a connoseuir or chinstroker it is overlooked and unheard. And it is sold on a medium called vinyl that limits the market even more, mainly to people who mix records in their spare time.
Oh and add the fact that it has gained the image of being classed as music for speedfreaks and drug fiends.
Its not sexy either.
Chicks don't dig techno.
Basically Techno digs its own grave by being what it is. A neiche form of expression.