Rangers tried it with Euan Lindsay of Accies.
Seems that Rangers and Celtic believe their best bet at getting the best youth, is not to find it and nurture it, its to let other clubs do the hard bit, then steal it.
Same kids that jump ship will probably get released aged 21/22 having never played a meaningful game in their careers, then having to drop to div1 or 2 to play catch up with their similar age group who didn't jump.