story
First, Amazon has studiously avoided any effort to collect state sales tax. They use a variety of clever dodges to raise doubt that their design and development shops in CA amount to a business presence in CA. The "affiliates" program, recently shut in CA, was another such dodge. Same with the distribution centers being a "separate" company.
Then, when the state decides to go ahead with collecting something that is theirs to collect, Amazon tries to deflect it by raising a totally different matter (jobs in the state). The fact that they're not arguing their sales tax case directly, but threatening to pull jobs, is another aspect of the case you're missing.
I don't see how this is "win-win".
Here's a summary of the TX situation:
http://www.internetretailer.com/2011/05/16/texas-moves-ahead...
Featuring this choice quote which is replete with doublethink:
"We're committed to growth in Tennessee because the people here have demonstrated their commitment to Amazon jobs and investment," says Dave Clark, vice president of Amazon North America Operations.