In principle, capitalism has supposedly been a myriad of small companies in every field competing against each other. However, in practice, this has rarely been the case. Once the allocating principle of resources and the ‘free market' became established from the early 19th century, capital has always been drawn upwards in a vortex of profit. Small companies became established as legal entities with limited liability through shares from the 1830s. Shareholding of course goes back to monopoly trading companies in the early 1600s, established by parliament. After the 1830s, shares of profitable small companies were bought out by larger companies until only a few companies are left in the marketplace.

The dollar system for trade works well enough for the Western countries. But for any country which the USA disapproves of, she imposes 'sanctions' and that limits the availability of dollars for trade. Cuba has been sanctioned for decades by the USA. Today there are now many new examples: Russia, Venezuela, North Korea, Iran, and Syria are perhaps the main sanctioned countries. Domestic banks across Europe are forced to demand that their customers conform to US foreign policy.

There are now movements to combat these hindrances. China has for some years wanted to use her currency, the renminbi, for world trade. China has already begun to avoid the dollar system, which regularly infuriates the leaders in Washington.

Perhaps the most important historical global change after the defeat of Germany and Japan in 1945 was the USA taking over world power.