Not necessarily. With that mindset, you could end up with the same results by using your fiat profit to buy bitcoin/cryptocurrencies, if you're really THAT bullish with cryptocurrencies. It just completely depends on the business and how you handle it, regardless if it's a business that handles fit or crypto.

With that said, it's pretty hard to answer your questions. It simply depends in soooo many factors. It's almost like the classic question of "should I get a job or start a business?". We don't know what your skills are, what country you're in, what your target demographic is, what connections you have, etc. So much factors that it's impossible to get a rough answer to your questions.