> The standard way of getting "rich" is to get into a good career that> pays a lot. Before Silicon Valley, people got "rich" by working at
> Wall Street, law or Congress
I'm afraid this isn't really true. Through most of the industrial revolution and after (i.e. after the early 1800's), professionals (lawyers, bankers, accountants, doctors, etc.) made a smaller multiple of unskilled labor wages than they do today. In America at least, the way to get "rich" has always been to start your own business.
This was true in the 1800's and it's true today. There have been repeated waves of change as new technologies spread: textile mills, cotton production, mining, railroads, telecom, electricity, appliances, automobiles, department stores, advertising, aviation, broadcasting, computing, etc, etc. Each wave of innovation saw the creation of thousands of new businesses. Sure most eventually fail, but hundreds did pretty well and a handful got insanely wealthy.
American culture and laws (usually) rewards this sort of risky behavior. One can debate whether it's, moral, just, or good for society. But generally speaking, not much has changed wrt this facet of our culture over the last 200 years.