amazon.com vs facebook.com
Amazon wins because it's a hydra—clone the storefront and you still face logistics, supply chains, and Prime's network effects that Facebook doesn't need to match.
Amazon
10clone difficulty
moat 10
Amazon is a decades-old, multi-billion-dollar backend empire—no amount of prompting rebuilds this even partially.
Full teardown →vs
Facebook.com
10clone difficulty
moat 10
Facebook is a decades-old social network with ungodly backend complexity; not rebuilable by prompting in any realistic timeframe.
Full teardown →