The Wealth of Nations by Part 5 Chapter 2 Page 279

less of the necessaries and conveniences of life than in any other part of Europe. The residence of such wealthy people necessarily keeps alive, in spite of all disadvantages, a certain degree of industry in the country. Any public calamity which should destroy the republican form of government, which should throw the whole administration into the hands of nobles and of soldiers, which should annihilate altogether the importance of those wealthy merchants, would soon render it disagreeable to them to live in a country where they were no longer likely to be much respected.

They would remove both their residences and their capitals to some other country, and the industry and commerce of Holland would soon follow the capitals which supported them.