The simplest answer to this question is that by the summer of 1789, when Louis XVI summoned the Estates-General, the fiscal crisis that beset France in the late eighteenth century was probably too far gone to be salvaged. Indeed, in this climate, the meeting of this body (which was almost never convened) really made things worse and proved to be the seminal event in the outbreak of the Revolution. This was because the representatives of the First and Second Estates (the clergy and the nobility, respectively) insisted on sitting separately from the Third Estate (the bourgeoisie and commoners). In this way they could block any reforms to the privileges, especially exemption from taxation, that the Third Estate might try to implement. In fact, the King had hoped that the Estates-General would agree to some reforms--this is why he called for the assembly in the first place. When the Third Estate called for the Estate-General to sit as one body, which would have given them more voting power...