[joshuaturner]

The problem is with the definition of “sustainable business model.”

Could you maintain a profitable business and continue steady growth? Sure. Could you become a unicorn and IPO within the next 5 years? Unlikely.

[marcosdumay]

Or, in other words, our entire society is focused on creating fake business that can only survive in a monopolized market (or can't even then).

That's because the money is concentrated into a few dumb people with limited capacity to invest it. So they'll push it into a handful of companies that will destroy whatever sustainable companies that exist on the same market.