After winning the Finals this year, the nuggets are pretty much bringing back the same team without Bruce brown but other teams like the bucks, Celtics and suns have improved. Imo I think the next 2-3 championships will be won by either the Bucks or Celtics and I think the Nuggets will make the finals again this year but the only way they might win again in the future is to either make a trade for a 3rd star or get much better depth.
I remember when GIannis won - a lot of the same discussion was occurring but you realize how difficult it is to repeat, especially when health becomes more and more of a factor each season. Everything has to line up just right for you.