Or they could say that they won't buy your electronic (off the shelf) data system if you keep poaching our controllers - oh, they've already done that one. Or they could make approaches to the adjacent UACC urging them not to keep recruiting LACC valid controllers - ah, it can't be more than a decade since they did that. Not sure what pressure they can put on the sandpit, but you can be sure they'll do something in the background to stem the flow long before they every consider the market value of their staff.