This is why narcissist and people who are overconfident to the point of absurdity often excel and business at life. No body else has any idea what they are doing, their competitors mostly have no idea what they are doing, and they are willing to project that they know what they are doing unconditionally which is attractive to many people.
So people follow them.
No, its money.
All these "tech unicorns" backed by VC money are the same.
Spend Billions to obtain "growth metrics" until such time as the spending can no longer be maintained and you have grown your "valuation" to a point no VC/private investor will save your ass, then dump the company on the public.
The marketing doesn't even change just the company, "at any time we can turn off the spending and growth, and make pure profit."