Don't have a sugar daddy with as deep pockets as the other teams pure and simple.
You say that yet Castres are the current T14 champs, and have a squad full of players who would be considered budget (not skill wise) as they're a mix of cheap players bought and coached to a high standard as well as academy players.
Additionally on the note of Castres - They've just beaten Clermont at home! The Marcel Michelin has finally been stormed after 77 games unbeaten. What a sad end to Clermont. I can't see them recovering from this for a while. They're losing a coach who's done great things, aside from this year whatevers happened to them. They're going to be losing Sivi,Voosloo, Byrne, King, Bonnaire, Hines this year with Nalaga, Rougeria, Cudmore surely going in the next year or two along with James and Malzeiu. A team in dire need of a change. I believe they've acquired Guildford as a replacement for Sivi but he'll need to be monitored to be used to his potential.
A real change in the T14. Aristocrats Toulouse, Clermont, Perpignan and Biarritz are on the down spiral. Weren't all four contesting the semi final play offs in 2009?