It depends on how this offseason shakes out. GS is almost certain to keep their top four guys, but nearly everybody else on the roster will have an opportunity to play elsewhere. They'll inevitably get a few ring-chasers who take less than their worth to try to win a chip like David West did. Even so, they could be looking at a very thin bench. And if we pull off these moves, we'll face a similar problem. We'll be putting a lot of responsibility on some guys who have very little - or zero - NBA experience. But if we could bring in a couple of solid veterans looking for a shot at a title, that could put us in a much better situation in terms of depth.
Anyway, puncher's chance? Absolutely. Fluke games happen, injuries happen, if we get to the Finals then we have a shot. But I don't expect them to win next year. So many things would have to go right for us, and some things would have to go wrong for GS too.
IMO it really starts to get interesting in 2018. Our young core gets that year of experience, we add another potentially-elite draft selection, and I think at that point our depth can offset their edge in elite talent.