I don't see Kifaru dominating the backpack market, except in maybe the zeal and loyalty of their users. And before you start foaming at the mouth -my hunting backpack uses a Kifaru frame, but I don't have some kind of weird soulmate connection with Kifaru or their employees. Backpacks are a lot like boots - opinions are subjective and based on personal preference over fitment, comfort, etc. Kifaru makes excellent gear, as does Exo, SG, Seek Outside, etc. I've only met a handful guys on the mountain with Kifaru frames too. I'd say based on my limited experience, I've seen more Kuiu and Mystery Ranch packs than anything else.