1. Its not going to happen. It's a leverage move by Denver to get the Knicks to ante up their offer instead of lowballing them.
2. The Lakers would become actually more vulnerable in the playoffs if they really did want to make a move. Now if Bynum was to get injured again or they get pummeled by Boston again they will want to do something, just not Carmelo.
3. The NBA actually has always had teams like thi. It's just magnified now because of Lebron James "Decision". Magics' Lakers, Larrys' Celtics, Russels' Celtics, Wests' Lakers, 2000s' Spurs, Shaq-Kobe Lakers, 90s' Bulls, etc.
The NFL has this too though it tricks people into believing theres parody, when in reality there isn't. The Steelers, and Packers, Bears, etc. have been good through decades while teams like the Rams, Chargers, Seahawks, Lions, etc. aren't. MLB also with the Yanks having money to pay for greatness, while Tampa Bay and Florida never will be continually good.