Seems far-fetched to me as well. It would have catastrophic effects on his reputation, legacy, and probably business interests. .
What Legacy?
Lebron is a sell out who has no loyalty to anybody but himself. He goes where he thinks he has a chance to in, and when he feels his window is starting to shrink he moves to the next team...leaving the previous one to wither away and die.
Lebron was the hero of Cleveland - dumped them to run to Miami to chase titles. Then when Wade and Bosh started to decline and the Heat had no cap space to add talent, Lebron saw the window was closing and jumped ship back to another promising situation which just happened to be in Clevleand.
I don't think he will move on, but i sure as hell wouldn't be shocked if he did.
What's wrong with chasing rings? If he had remained in Cleveland all along, never winning anything, people would chastise him for having no interest in winning. He makes the right choices for himself (in terms of basketball, business, branding, etc.), and what's wrong with that? At this point, I think remaining in Cleveland is in his best interest, so I think he's there for a lot longer.
I don't think ANYBODY would be criticising Lebron if he stuck around in Cleveland from the start instead of skipping to Miami. I don't know why you would think that they would. Clevleand were a deep playoff team every year while he was there, and a perennial contender. Why should anybody criticise him for staying there?
Kevin Durant hasn't won a ring in how many years in OKC. Does anybody criticise him for not leaving OKC? Not at all, nobody does. But I bet if he leaves and goes to Golden State (just as an example) he'll cop no shortage of criticism for jumping ship.
It's called loyalty.
Clevleand built there entire roster around him. They fired coaches for him. They hired players for him. When asked about his intentions as a free agent, he told the entire world that Clevleand was his home, and he had no intention of leaving.
He lied right through his teeth, and showed no signs of empathy whatsoever.
Then just when Miami were struggling, rather than saying "guys, I will stick with you - we'll try to add some guys and we will try to win together", he walked.
How can you not see the obvious selfishness in those actions?
Kobe never left the Lakers, even through the struggles. Did anybody ever criticise him for sticking around, or complain that he "didn't want to win"? No.
What about Paul Pierce? Never.
How can you criticise a star for sticking around and trying to carry his team through good and through bad?
That's a big part of why I have no respect for Kevin Love, and complete respect for Demarcus Cousins. When things got bad, one of those guys forced a trade and tried to take a free ride to a contender...while the other has stuck it through the toughest of times, and remained loyal year after year. I think that's admirable.