How is this determined? I am trying to see if there is some actionable chain of reasoning here, or if people are just stating the top 5 companies in the public markets qualify? Is it a certain net profit margin? A combination of various factors?
The funny thing is Facebook (or Meta I guess) could fall of the face of the earth tomorrow and humanity would not really be impacted other than temporarily losing WhatsApp groups and having to migrate to a different chat program.