I don't think the industry will change, it can't. Mainly because instructing is the entry level for most people so money and conditions will be crap! I know of at least more than one FI who didn't progress further and gave up after 18 months of instructing. So it seems FI's get fed up dispondant or just cant survive on guarenteed bugger all and leave, only to be replaced by a newly qualified FI who just can't belive he's getting paid to fly! And so it goes on. Even with some charter mixed in your still paid by the hour and quite often worse off for the effort. The trick is to go for the CFI positions I would guess!
I love the job just don't know how long I can stick it.