For whatever reason, James Jones wasn't able to assemble the right players to compete for a championship last season after the Durant trade. Maybe he didn't have the time. The pieces and talent didn't fit. Also, the Suns had run out of ready assets.
However, this off season he has corrected those mistakes and somehow, with minimum contracts, has assembled a team that can legitimately compete for a championship.
IMO, the momentum swung the Suns way when they were inexplicably able to pull off the trade for Bradley Beal.
However, if Beal had not chosen Phoenix, the Suns might have well fallen short of their off season goals.
After that, the chips started falling in place, but not my accident. The Suns front office had created the environment for it to happen.