I would say 10x engineer is someone who doesn't need a team. Who simply don't need the security of the incidental monopolies like Google or Facebook to deliver

I would say 10x engineer is someone who doesn't need a team. Who simply don't need the security of the incidental monopolies like Google or Facebook to deliver a great product used by lots of happy customers. How many devs would pass this test? Hardly, that many. Engineers at Google can simply have smart people who they can leverage, easy access to experts and specialized contractors and if all fails, no need to worry there is ad tech monopoly in place which keeps minting money. You simply cannot discuss "Engineer" without also talking about the constraints involved. Engineers at these companies are worse engineers since the most important constraints are already taken care by their respective monopolies.