The Wealth of Nations by Part 4 Chapter 7 Page 171

But as it obstructs the natural increase of capital, it tends rather to diminish than to increase the sum total of the revenue which the inhabitants of the country derive from the profits of stock; a small profit upon a great capital generally affording a greater revenue than a great profit upon a small one. The monopoly raises the rate of profit, but it hinders the sum of profit from rising so high as it otherwise would do.

All the original sources of revenue, the wages of labour, the rent of land, and the profits of stock, the monopoly renders much less abundant than they otherwise would be. To promote the little interest of one little order of men in one country, it hurts the interest of all other orders of men in that country, and of all men in all other countries.

It is solely by