Joe makes a good point here that our planes don't have to be a full 2m. Weight goes up by volume which is a cube of length or span. Frankly, I'd be just as happy with a plane 2" to 4" smaller that was sturdier and didn't cost a fortune due to exotic materials and manufacturing. Betcha couldn't tell the difference in the air, either. Do the manufacturers make them exactly 2m because the top-end pilots demand it?