I'm not sure I can credit what you are saying well enough to really respond. Seems like encounters with no fully committed strikes can and should be exited.
How about you rely on, say, throwing or taking the attacker down so you can get yourself a moment to escape the situation you are in? Or just stab the guy or something. I don't think getting into a boxing match on the street is the revolutionary new self-defense idea of the 21st century that those medieval Asians were too stuck on tradition to imagine.
I'm not sure what you mean by fully committed, but if I go by what Aikido folks usually mean, then yes, it's very possible to strike someone in a way that is not fully committed by that definition with strikes that are very dificult to exit.
BTW, I'm not advocating boxing, and never said that I do - I only brought it up to show how small a percentage of strikes actually connect enough to do any damage, a small enough percentage that focusing on "one strike" is probably not realistic at all.