N-a-B...
True, but in the years to come there may be a big difference in the through-life costs of different aircraft, depending on how the obsolescence and diminishing manufacturing sources (DMS) issues were anticipated and managed.
What you want to see is an approach that (1) allows you to exploit COTS sources and (2) reduces the cost of change. In that respect I am interested in the Saab approach that emphasizes the partitioning of mission systems from flight-critical systems.
How JSF will work out, I'm not sure - but its precursor, in terms of an integrated architecture (sensors &c as peripherals to a big common processor) was the F-22, and that story has not been pretty.
So yes, it's everyone's problem; but that doesn't mean that it will hit everyone the same way.