EK does not poach from FD before the pilots have 2 or 3 years presence in FD. There might be exceptions to that but that's what I have been told directly from EK recruitment and it makes total sense since FD is an affiliate of EK. When you are thirsty, you don't take the drink from your kid and make him thirsty in turn. You just take it from somewhere else, right? (Ryanair for example).
The policy might change some day. EK might decide to slow down FD and take their pilots but given the growth planned at present at FD (doubling the fleet from 25 to 50 pieces in 3 years) and EK still planning on 2 wide body aircraft per month for many years, I don't see it happen. My 2c...