As for the wall garden approach I can understand it, while I'm suprised a little that the UK and Australia don't benefit from the ITAR 'special relationship' waiver that I'm pretty sure was passed in to law by the USA. Maybe I've mis remembered.
eaglem, although UK/AU have people embedded with the core system that stays inhouse, no nation gets the code of the core system and only UK/BAE had a real whinge about that
Israel didn't get anything that isn't available to everyone else, they asked for more, got knocked back and then internal
PR said we won
Like Israel as per spaz's last link, customers can plug and play, coms, regional library, mission requirements etc.
Israel nor anyone else gets the same access level to tech stuff that's shared between the us/uk/au and canada that far exceeds anything on a f-35