The writer had a very basic and under-researched understanding of how an NBA team business model works.
There are only two reasons to keep a player as the centerpiece of your franchise: He can win you a championship or he is a ticket magnet who keeps the money flowing.
Iverson, through no fault of his own, is no longer either of those for the Sixers.
Ticket sales are a major source of income for the smaller teams. The more successful teams make much of their money from fees paid for broadcasting their game on cable, local TV, or for big bucks, national and worldwide. There's also the merchandising, which can dwarf ticket sales on its own.
No matter what failings a sports fan will lay into AI, the fact is that cable companies and TV companies will pay serious cash for a Kobe - AI showdown broadcast rights. Yao is probably drawing in a pretty penny for the Rockets considering Houston is the only NBA entity the billion people in China care to watch. And the merchandising for both guys is among the best in the NBA.
It's still a business, which is about making money, and both guys generate a lot of revenue. I doubt AI will be traded for a less than a guaranteed up & coming young star in the wade/melo/lebron category.