Why does building a successful business necessitate generating economic externalities? Many do, and that should be prevented, but many also don’t. And to say that those externalities are responsible for a majority of the business’s growth in all cases is just false.
Do you have any company in mind (within the subset the argument refers to, so one that achieved >=15% monthly growth with sufficient consistency) without one or more worrying externalities?
I'm genuinely struggling to think of a sector of billion dollar business that doesn't rely heavily on externalized costs. I'm not trying to be difficult, but I can't come up with any.