I think you miss that most people probably don't see this and say "Damn those US companies for using feet." Get over it?
I'm talking about people looking at "10-2,000 ft" and asking themselves "Uggh ... how much was it, again?" Then they google for some unit converter. Then they stumble over "5-lbs", google again, but abort the search and decide it is not worth the trouble.
This is simply a bad user experience for the majority of their potential customers.