Do all KO streaks inevitably end?

Strange question. Obviously they don't, there are countless fighters who retired on a KO streak. Match ups often play as much as a role as power when it comes to KOs. Not to mention than anything more than 2 KOs qualifies as a streak, so I don't get what you're trying to get at here. Maybe streak is the wrong word here. What i meant was someone who always KO's his opponents, from start to finish of his career. Someone whose power is proven uncontainable in the literal sense. The question is whether power that no one can withstand can exist.

Foreman was able to re-invent himself after his comeback and KO some younger, talented fighters. Inevitably, if you hang around long enough it will come to an end. Especially if you are still fighting top tier opponents towards the end of your career.

Strange question. Obviously they don't, there are countless fighters who retired on a KO streak. Match ups often play as much as a role as power when it comes to KOs. Not to mention than anything more than 2 KOs qualifies as a streak, so I don't get what you're trying to get at here.

Nothing is a definite, there's always exceptions & outliers. We got guys who never lost that have proven themselves to be outliers. So while there hasn't been a championship level career long KO guy (Valero don't count cuz he killed himself mid-career) I don't think thats an impossible thing, but it is tougher by a factor of 10+ or more probably. So nah its not inevitably, but it is highly difficult & the margin of error on getting there is nearly zero I'd imagine. But if you look at monsters like Wlad or Lewis even then there have been opponents who have withstood those blows so the theoretical monster that keeps getting KO's even with a rising count of opponents and rising talent, how would he look?

Edwin Valero 27-0 27KO Eric Crumble 0-31 31 KOs

Unless a boxer has all around good skills he won't be able to get all these KOs. No boxer in history has 100% KOs at the champion ship level. They may never lose but there will always be tough good opponents they can't knock out on a particular night. Marciano won most of his fights by KO and he never lost but he had other assets besides punching power like a great chin, toughness, heart, stamina, a style that was hard to hit cleanly and a very high punch rate per round. Why is that? Is there a biological reality that the most durable body combined with a good defence/counterpunching will come out above the hardest possible punch?

Edwin Valero 27-0 27KO

It seems to be a common notion that punchers will eventually be outmatched by a talented boxer. Then there's ofcourse the scenario of getting KO'd oneself wich also seems to have happened to everyone known for great punching power. Is there an innate limitation to power beyond wich point the trick won't be enough, or is there a valid theoretical potential still that someone will rise who nobody just can sustain?Unless a boxer has all around good skills he won't be able to get all these KOs. No boxer in history has 100% KOs at the champion ship level. They may never lose but there will always be tough good opponents they can't knock out on a particular night. Marciano won most of his fights by KO and he never lost but he had other assets besides punching power like a great chin, toughness, heart, stamina, a style that was hard to hit cleanly and a very high punch rate per round.