Defense Watch indicates that the death spiral is already here for the F-35.

via Defense Watch (a Canadian Defense oriented blog).

This is a reduction of 219 planned purchases, which brings the numbers down to 2,921 F-35s.
A drop in that number of aircraft results in a $525.6 increase to Canada for a potential acquisition. If we only now have a $342 million acquisition contingency, this means we are now over $9 billion.

Read it all here.