Look at Foreign Earned Income Exclusion and Foreign Tax Credit

Not to mention the small matter of cost of goods sold

That’s absurd. 250 million weekly visitors stealing a $1 item per visit would amount to $13B per year in losses, approximately equal to Walmart’s annual net income. They would love to raise prices to compensate (2% should do it) but then they would lose the equivalent in sales to competitors like Amazon that don’t face as much risk from theft losses.