You could think of the world consisting of two kinds of people: people that have money now, but want income in the future, and people that need money now to generate income in the future. For example, maybe you have 10k and your friend wants to start a business.
It’s mutually beneficial for the first kind of people to give the second kind of people money in exchange for a cut of the profits in the future, and this process is called investing. Of course, there’s risk involved because nothing is guaranteeing that the other person will do something good with your money, but on the other hand maybe they do much better than you expected.
Investing doesn’t need any crypto, just any sort of capital that you’re willing to give to another party for them to use to generate more value.
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