Travis Fulton I knew he'd be brought up. But you are talking about win streak after he had losses early in his career. Same Igor who had a couple loses in his early part of his career. I'm talking about a complete unblemish record from the start all the way to 40 wins. That's never happen and most likely will never happen.
Having 40 wins in between losses is moot point. I'm sure he gained experienced along the way to garner that kind of streak and also have fought cans like you say, but that's not what I'm talking about when comes to a 50-0 record or 40-0 record.
I'm talking about guys who never lost at all.
It's not a moot point. Beating 50 people in a row is very relevant to going 50-0. It shows that it is literally possible. There are many young fighters who would beat up Travis Fulton during his large win streaks, he wasn't going on those streaks just because he had a lot of experience, he was just on another level from tomato cans (as anyone who is a career fighter will be).
Early losses are an actual moot point, because it's already a given that if someone lost during their formative years they can't be 50-0. The point isn't that Fulton was 39-0, it was was that someone who wasn't even that high level of a fighter could win 39 times in a row, which is a prerequisite for going 50-0. Fulton actually did
beat 50 cans in a row. His losses came against non-cans.
We can agree that fighters can go 10-0, 15-0, 20-0. You can be a seasoned fighter and have an undefeated record. So if you just scaled back your competition or never increased your competition in the first place, you would have the experience of someone like Fulton during his run.
In other words, if you managed to go 27-0, you're not a rookie. So if you're still fighting guys who are 1-5 when you're 27-0, it's pretty obvious the latter is going to win the fight.
It's definitely possible to go 50-0 fighting people who have no intentions of being professional mixed martial arts. This scenario isn't that realistic, but if enough people tried it, it would happen. I dont really get how it wouldnt.
To summarize my point more clearly:
If someone can go from 0-0 to becoming a Travis Fulton level fighter while being undefeated, then they could go 50-0 by fighting cans. We already know this is the bare minimum "level" you need to beat 50 cans in a row. And many many many people who are undefeated today are better than Travis Fulton.