Of all people, you'd think Simmons would see the folly in filling out your salary cap for multiple years with the core of Jack/Martin/Ariza/Scola/Okafor. That's exactly the kind of situation the Bucks, the Bobcats, the Pacers and the Rockets have been trying to escape. It's small market hell: a full payroll, no marketable stars, not good enough to make a real playoff run, not bad enough to get draft picks.
Meanwhile the Lakers got to add a superstar and actually improve their trade flexibility (retained their best young trade chip, their draft picks and acquired a fat trade exception). And the Rockets got to dump the core of their long-term mediocrity on to the Hornets.
The Lakers and Rockets got away with murder in that trade, not so much to their own benefit (though they certainly did benefit) but as to the destruction of the Hornets.