But the business model has to change in order to survive. The company cannot undercut forever, it actually needs to change in order to survive. The business model of today is not sustainable. They may have a large warchest, they may be able to crush GM, but once they do, or the warchest runs out, the business model must change.

If you want to make the argument that their overall plan with the later change is sustainable, thats fine, but this current phase is not sustainable.