M. Sarkozy could control agricultural prices without subsidies and guarantee unending prosperity for farmers, if he really wanted to.

He just needs to impose a sufficiently high legal minimum price for domestic produce and high tariffs on foreign produce (backed by the death penalty for smugglers of cheap, better quality foreign vegetables).

It might breach a few treaty obligations and make consumers pay more, but a politician who truly believes that the farmers are the most important part of society would not shrink from drastic measures.