> Clearly this is not true. The largest companies in the USA are not financial

According to this list[1] of the top 100 largest (public) companies in the US, 14 of the largest companies are in the financial industry, and five more are in insurance. Six if you count Berkshire Hathaway; eight if you also count health insurers (although they're not exactly a financial service exporter, so probably don't count).

So between 19-22 of the largest 100 US companies are in the finance industry. In comparison, there are only eight or nine tech companies, and 11 petroleum businesses. So sure, the.. six largest companies aren't financial companies, but finance is very well represented among the largest companies in the US below that level.

[1] https://en.wikipedia.org/wiki/List_of_largest_companies_in_t...