the west has somehow got an addiction for high-tech toys instead of bringing something up really meant for war. the F-35 is a good example of that techno-horny industry. i really dont see in a war some Lockheed martin nerd with a computer show up to go fix that software error with the F-35 weapon system. witch in fact they suffer from constantly together with avionic errors.
*F-35 attempting to fire on incoming fighter aircraft-weapon launch failure*
pilot: "the hell is is this?".
Nerd on radio: "i see your problem, you do not have patch 1.9845 installed. please return to the airfield for an update patch".
not to mention the costs of fielding one F-35. for every F-35 Russia probably fields 4 modernized SU-27's or equivalent that will take it out.