I'm hoping an expert will be able to explain to me why it is that JQ, who otherwise aren't bad at selling us things we like for extra $ (be it window/aisle seating, or up front seating, or exit row seating, or lounge access at OOL and in NZ etc) can't interline our baggage for extra $.

I actually quite like flying with JQ - I usually pay for 1A or 1C (I like being front row with big legroom) - but I *HATE* the fact they won't interline baggage and it loses them plenty of my business (and surely many others).

Why can't JQ interline bags for extra $?

Surely there'd be a BIG market for it?