We are too clever for them and always beat them to the punch?
Actually I forget exactly which players we were talking about but anyhow those clubs do buy similar players to Manly. Storm had Tuilagi, also Cooper Johns, Chooks had Tuipulotu, Storm and Chooks both signed Lodge, Souths and Chooks both signed our new guy Paulo. Brisbane signed Bullemor. Panthers had Corey Waddell!
Obviously clubs having sustained success will be attractive to good young talent, and the more good young talent you sign, the more likely some will rise to the top. Especially as they are playing with high achieving teams.
Manly isn't one of those yet so we have to build, piece by piece.