It survived the Revolution, and had a gaudy resurgence (as seen above) during the reign of Napoleon, who patronized the opulent porcelain, just like the kings and queens whom he had replaced. Here is an essay on the history of Sèvres. Lauren has an interesting post as well.
Before their untimely deaths, Louis XVI and Marie-Antoinette patronized the national porcelain, as was their duty. They had simple taste compared to the revolutionaries who took over the government, the palaces, and the porcelain factories. Here are pictures of reproductions of pieces ordered by the king and queen. The laiterie at Rambouillet, with the "breast cup" and other vessels, was supposed to celebrate all that was wholesome and natural, from breast-feeding (which most noblewomen shunned) to the manual labor that went into running a dairy.
The aristocracy had traditionally looked down upon manual labor and peasant life. Louis XVI and Marie-Antoinette wanted to show that it was good and beautiful and life-giving. The royal dairy was a sort of monument to the way that staples such as cheese and milk were produced.