Firms haven't started to realise it yet, but by excluding the trainable people, by insisting on this glass ceiling of "two years' experience," they aren't doing themselves any favours.
The lucky handful of geeks with "two years' experience" already under their belt are not going to sit back and let the employer dictate how much, or how little, they are going to get paid. The employer wants to pay them as little as possible - but the candidate can ask whatever the market allows, as much as possible, and if his name's that good, he will be able to gouge the employer for as much as he can get. And if the employer listens long enough, he'll find that all of the others will all seem to be adopting the same gouging tactic, for exactly the same amount - like a cartel structure.
Basically, you're going to end up with a small clique of experienced coders circulating between firms, raking in the money and coming up with the same tired code they've been peddling to the same firms from day one. The incentive to come up with original solutions isn't there - they're not after hiring newbies who might have something new that could knock them off their perch.
In the meantime, businesses find themselves financially in a hole paying for these bloated whales, they're just as much in the dark as they've always been, their programs are just as rubbish, nothing new seems to work - why should it? Working code costs more money, so you might as well just issue new patches - and folding left and right.
There's more money to be made running a cartel of consultants than by opening the jobs market to newcomers, offering them training and keeping the market fresh, competitive, adaptive and, most of all, viable.