How would you suggest that "these cadets" find a way into this industry? It is not their intention to undercut other pilots but they know just as you know, it is their only way in.
I'm not fully in the know, so forgive this question but, why are there so many experienced commercial airline pilots out of work?
You talk as if "these cadets" have a heaven sent right to get into the job. They don't, anymore than people in the job have a right either.
You ask how they should get into the industry? Well here's a thought, how about sucking it up buttercup, graft and work your way up. Oh too late. That question should've been asked years ago, and guess what?! You cant do that now.
Back when pprune was full of sensible advice to the odd (back then) idiot who wanted to get a big loan and join this new fangled airline placement scheme. "no!" said everyone, work hard, save up, do it in modules and get a turboprop job and do it the hard way, it'll pay off. It went wrong when the first person turned their cheek on the hard way and signed up to the short cut. No turning back now. Damn mess of this industry in the UK has been caused by CTC and the impatience of trainee pilots with egos and self righteousness bigger than Jupiter. Oh well, impatience and access to credit were always the undoing of society.