This franchise's success has always been built on keeping the long and short term in balance. See how we lost SJax, by not being willing to outbid ourselves. See how we dumped Rasho, Nazr, and Malik. See how we tend to roll late 2nds forward a draft (see Milwaukee last year and Toronto this year). See how our drafting tends to be very speculative, looking for good long term prospects we can watch develop in Europe (Mahinmi, Javtokas, Scola, Sanikidze, Splitter)...
This trade didn't help in the short term, in that it brought nothing back, not even enough salary cap room to maneuver. It didn't fill any short term needs, eg. the long awaited "long SF". It expended at least 1 asset (Scola) and maybe 2 (Butler). It also generated minimal long term benefits, a 2009 second round pick.
The other thing the Spurs recent success has been built on is not throwing away assets. Need to dump Malik's contract - Bring in Nazr for immedate big man help, in a trade many thought we won in the short term, and even in the long term looks roughly even; especially with Malik costing the Knicks something like $14 million this year... Rasho's contract gets turned into Bonner, Williams and a 2nd round pick...
In general, success in the NBA seems to be built on keeping the bigger picture in view, and weighing both short and long term benefits. This trade brought in little of either, apparently being excuted for the owners (NOT the organizations) financial benefit only.
As far as the transformation of the rockets talk; just look at what happened to the Mavs. Pre Avery : soft choking es. Add new head coach (Avery), New starters (Terry, Dampier). That season they finally got some guts, coming back against the Rockets, and playing well against a strong Suns team. From that year on, we have to worry about them in the playoffs, not just writing them off as another series win. In one year, with 2 new starters. The next year, they beat us and go to the finals. After that, well, they meet the Warriors, but we'll see if they bounce back.