Is it true that such projects aren't companies? He lists "run it as a part-time business" as an option but isn't that already happening when "users can visit,

Is it true that such projects aren't companies? He lists "run it as a part-time business" as an option but isn't that already happening when "users can visit, use and even pay for" the project? Or is it not a company until a user pays and then it becomes ok to call yourself a founder?