By your statement, literally every fight would end as soon as someone had a slightly superior position. That's patently not what happens. Being in a superior position to an equal or lesser skilled fighter means you are more likely to win, but certainly doesn't guarantee it, even then. Against a superior fighter from that positiion, it may not help much. Give me a BJJ above blue belt and let me get a superior position on the ground, and I've not yet gained a real advantage, because I'm in their area of strength (with a few exceptions of spots where I have skills that might balance things).
There was no hyperbole intended if it appears that way through the neutrality of text is one thing. How i am interpreting this line of argumentation is underplaying the risks to a hyperbolic extent. (which i may have rebuffed with the opposite hyperbole, not you, i mean the argument line in general)
Now fights dont always 100% end in one definitive way, you cant say that without being dishonest, so i am not saying that. What i am saying is, they tend to and the majority do end and what needs to have happen for them to end, is one pariticpant needs to be put into a inferior position to allow them to be finished off. (what ever that is, doesnt matter) The definition and implication of fight would mean there is a struggle and one participant is actively stopping you from doing that, and thus trying to do it to you so you cant do it to them.
If we play it as equals, lets say its 50/50, putting somone in a inferior position makes it 70/30 (30% allows for the diverse range of positions, and you making a recovery or putting them in one) Why would you start in the latter?
Against a superior fighter from that positiion, it may not help much. Give me a BJJ above blue belt and let me get a superior position on the ground, and I've not yet gained a real advantage, because I'm in their area of strength (with a few exceptions of spots where I have skills that might balance things).
You dont really have a choice of who is starting anything, they could be the single best (technically worse for you) person in 100km coming over to do what ever to you, or the single worse. Just why would you risk starting in the inferior position if you suspected them? Its just going to be harder and reduce your chances. If they are your greater, you have made yourself More of a lesser. If they are your equal, they have been made your greater. If they are your lesser they have been made your equal.
(quoted as i specfically wanted to address that point seperate, but its sort of mixed with the end percentage point)
TL;DR and clarification of the above, my point is "why risk it?"
Addendum: I have stated before i am a weapons bug and more biased towards that and striking, movement for both is pretty important. And to be fair "inferior position" in both of those is normally after either someones lopped something off you, or has cracked your jaw hard enough to concuss you. So thats where the disconnect may come from.
I dont think i have seen, nor does anything spring to mind as a example if two BJJ people try to victimise each other, or one does another, or just two grapplers on somewhat of a equal level. Its normally somone better at grappling closing in from somone trying to box, or two people boxing each other as the fight. If anyone can find a video of grapplers involved in predatory violence, i would be grateful. Or just one trying to victimise the other. (focus on BJJ obviously) The other concern i would have for laying down is, they could initiate the attack by just jumping on your head. (imagine the defendu two legged one, i cant remmeber what its called off the top of my head)
Thinking about it, a video of the subject is probbly the best way to go about this. Id rather one of a real fight between BJJ people, and a technique breakdown, as opposed to just one or the other. (so i actually know whats meant to be happening, and actually know it can work)
If anyone can find anything, feel free to inbox it to me if they dont want to post it on the thread.