they pay for their type rating, and they are cheap labour
So dropping parachute jumpers for free, instructing for peanuts, banner-towing for peanuts, flying a scary old twin-prop for peanuts... That's not cheap labour? Plus you're a lot more likely to end up in a mangled wreck.
It's a problem across the whole industry. If you add up the pounds, dollars, or whatever you like, it's actually a better financial option to take up something like an EZY TRSS, CTC Wings, etc than to pay for an instructor rating, instruct for a couple of years, fly a Shorts 360 for another two, etc. Honestly, do the maths.
I'm not trying to say that paying one way or another for your type rating (even if the company disguises it under a clever name) is the only way to go, but don't kid yourself... you end up as cheap labour for the first few years of yoru flying life either way. Good old days are gone I'm afraid (and they were only possible because of the screwed up economics of route monopolies and state ownerships).
P