Metcalfe's Law

Metcalfe's Law: Why Second Place Is So Much Worse Than Second

Ten times the users gives roughly a hundred times the possible connections. The exact formula overstates things — the underlying point about compounding leads does not.

Network Effects: The Only Moat That Deepens While You Sleep

A lone fax machine was a paperweight. The machines never improved — the network did. That distinction separates genuine network effects from the many businesses that merely have a lot of customers.