From the LA Times:
The issues raised by both [WTO Aircraft] cases are important, and together they should help clarify what governments can and cannot do to support the aviation industry. Tougher limits on subsidies would assist both Boeing and Airbus — they can raise capital relatively cheaply to develop new products without taxpayers' help, while their competitors in developing nations are more likely to depend on governmental subsidies. That's no guarantee that China and other developing countries will heed the WTO, but it's a start.
Do Boeing and Airbus have a joint interest in establishing tough subsidies rules that prevent new competitors from entering the market? Has that played any role in their thinking about the WTO dispute?