The Rothschild family, for example, first started in Britain because of the Napoleonic Wars. It stands to reason that the Rothschild family is pro-British and should do more for Britain, but the Rothschild family has not done so. The family chose to develop in the whole of Europe, not only investing in Britain, but also investing heavily in other European countries such as France.
When the Second World War broke out, the Rothschild family suffered heavy losses in the European market, but its successful investment in the United States made it invincible and became a world-class capital family for a long time.