Boxers can duck and weave, and hit insanely hard...what more do you need when you're on your feet? Nothing.
as i said....most fights go to the ground in fairly short order.....which is why its idiotic to put your kid in karate to teach them to fight......cant think of many MMA fights that i have seen where they didnt go to ground short of putting to guys with strong backgrounds in karate or such together.......cant think of many real fights that didnt go to ground either.....short of the "most non-hardened fighters cant take a good shot to the jaw" rule.......