Only people who are like a fish out of water once the fight goes to the ground want that. There are many aspects and areas any given street fight can go, if someone is well trained at ground fighting, they are taking your ass down and putting you in the shadow realm, no different than a trained kick boxer would attempt to put you there with crisp strikes. Everyone in a fight is going to fight to their strengths to gain the upper hand, can't just remove the part they suck at in a street fight to help them win, at that point, just stay home and stop acting like Maximus, that life ain't for you.
When shit hits the fan in a street fight, the agreement is, and should always be, no weapons, and not to do anything potentially deadly to the person during the fight. Other than that, you do what you must, to give them safe passage to the shadow realm, and hope they awaken enlightened and a better person.