Is Hamilton jumping to the right car, the right team at the right time ... again?
Even if all the planets align and Moanilton ends up at Fezza with Newey, I don't think he'll succeed.
He's never been like Verstappen, who can drive a fast car quickly even if the cars behaviour doesn't suit him personally. Provided the car is fundamentally fast he doesn't mind if its twitchy, has a grippy rear or front, understeer, or whatever - he can work around that.
Last year was a good demo session of this. As the car developed it apparently felt a bit strange in some ways. Max adapted, but Perez couldn't and his relative performance fell away.
Hamilton isn't that adaptable, likes a car to fleel a certain way, and if it doesnt he puts his energy into moaning about it instead of hundreds of nours of sim time required to find a solution. The odds of Newey designing a fast car out the gate which also gives the feel that Hamilton seeks is slim.
And then Fezza need to build and develop it, get their strategy and pitlane management sorted...
Never say never, but so many variables need to come good, and fairly quickly at that, I can't see it happening.