There's probably quite a few people who'd use them - at least for single or two seaters - but for the cost. (Daft, arguably). Assuming you trust the 'keeper' (your group, your club, whoever) then why do we all need our own chutes?
And if we don't, it's no longer a two grand outlay (for a 2 seater pilot, say), but something you could rent for a fiver a go or whatever. Some people might balk at that aswell, but I'd guess there'd be more takeup if we didn't all have to go out and buy 1 rig per pilot, 1 rig per potential passenger.