While I have to concur with you that troubles at QCOM will have negative effects in the county and job markets, there can be some benefits.
First, it should take down ol' Irwin and his sons a few notches. They have become mighty arrogant and have been a malignant political force. The city and county will be better if they back out.
Second, their abuse of the H-1b program should end. The fiction of a lack of qualified people to staff up their company, hence a need to import labor, will be exposed for its dishonesty. Moreover, the long running use of "temps" to staff its permanent positions should also phase out. If they have hundreds of qualified former employees lined up at the door, wanting back in, there's no need for either temps of imported, indentured labor.
Third, they'll no longer have the open-ended excuse of high cost and lack of labor for the out-sourcing of manufacturing their chips around the world. When QCOM decides to do that, everyone will know why they do it, and that's to get a fatter profit margin.
A humbler company, if that is even imaginable, might just decide to be more open, be a better local corporate citizen, and a more fair employer. But the current CEO might just find his neck on the block in a couple years, and the company might actually behave even worse, if that's possible. Time will tell.