They didn't have a chance to play or practice together, they all have huge egos, switched offensive systems and coaches, dealt with a ton of injuries (and continue to)
TBH, as painful as it has been, the losses aren't totally inexplicable. All of the above = bad basketball. I don't care if it's D12, Kobe and Nash. It's still a team game that requires improvisation and subtle communication. Kobe and Pau played a great 2 man game because they speak a common language.
The fact that they have actually improved and look decent/good now is a miracle. Credit to D'Antoni and Kobe for finding a path. If we make the playoffs, anything can happen.
I do think that the losing with unite them in the end. The collective failure has also been individually embarrassing. Nash talks about "common experiences" being important, and one of those experiences has been enduring the ridicule and losses. Once they actually get a foothold and smell blood in the water, opponents will not want to contend with an energetic D12, Steve Nash and Kobe Bryant.