The Wealth of Nations by Part 4 Chapter 7 Page 236

No private merchant, it has been said, could well have capital sufficient to maintain factors and agents in the different ports of the East Indies, in order to provide goods for the ships which he might occasionally send thither; and yet, unless he was able to do this, the difficulty of finding a cargo might frequently make his ships lose the season for returning, and the expense of so long a delay would not only eat up the whole profit of the adventure, but frequently occasion a very considerable loss. This argument, however, if it proved anything at all, would prove that no one great branch of trade could be carried on without an exclusive company, which is contrary to the experience of all nations.

There is no great branch of trade in which the capital of any one private merchant is sufficient for carrying on all the