True, but the mutual arrangement was beneficiary for both parts, as described in "Suchet Contre-Révolution en Espagne" :

With the money received from France (few) and collected locally (most), Suchet could pay the army and buy furnitures to locals. This suppressed most of the incentive for looting on one side, and for fighting arbitrary "contributions" on the other, giving a new start to local economy, and thus easing the tax burden.
The guerillas, who felt betrayed and had to collect "free" furnitures from remote, baren lands, lost a lot of support in the process.

Not surprisingly, Suchet was from a businessman family.