Profitability is my definition of "real business" vs. for example, a lot of SV unicorns: if the business cannot sustain itself financially from its core revenue

Profitability is my definition of "real business" vs. for example, a lot of SV unicorns: if the business cannot sustain itself financially from its core revenue stream, and needs cash injections from "investors" then it's a pyramid scheme, not a business.