Interesting question, not that I have ever been in such a situation or will likely get into one. We can still dream can't we. If had two choose between the two I would probably prefer to pick fiat rich instead of crypto rich. Families who are rich with fiat money usually own a company or are majority shareholders in multiple companies. Marrying into such a family gives a lot of opportunities to make a career in their own company. The flexibilities with fiat money are much higher than with cryptos. We could easily sell a small part of the company and use the money to invest in cryptos. Vice versa it's much harder to sell your crypto portfolio and buy a successful business. Most profitable family businesses will never be sold publicly.