$AMZN market cap $1.5T. 

Total US retail sales ~ $5.5T / year. 

Slap a 3% margin on that (LOL), you get $165B / year. 

Yes, Amazon is global, blah blah blah. 

So, you've gotta hope $AMZN grows ~ 15x from here. And then you're still buying it at 10x P/E. 

Lunacy.