I think all richest people in the world always search ways to make money. BTC are very useful to make money but they aren' t for lazy people. Btc are for people who love to start something from zero, and i am one of them.
Start something from zero? without initial investment you can't earn anything out of bitcoin. You have to be either investors or crypto trader to earn good profit out of bitcoin/crypto and for both of this you need some cash in hand to make initial investment.