They wouldn't have been any cheaper or (more) successful if they wouldn't have been EU collaborations. If Germany or the UK would both have their own Fighter 2000 programs, they would have never survived. I wouldn't say A380 is an example of eurointegration, but Airbus is, so it's a product of it. I'm proud as an European that it is European and not American, but maybe that's partly because I am bored of the Boeing-look.
F-35: since the US is putting most money in it, will buy most, main contractor is US, and overall design and initiative is US... it's still American in my book.
The Kfir may be based on the Mirage design, but it's the Israelis who put the Mirage design and J79 together, and built a new fighter out of that on their own initiative with their own money and industry. So that makes it Israeli, but its score on the "national belongings list" is not as high as the Merkava MBT for example.
Let's see, a list of things that influence this, in some order of importance:
- designer or 'brand'
- developing company
- initiative taker (can be supplier or client)
- main contractor (supplier)
- development funds source
- main/dominant operator
- degree of customization
- airframe production/assembly share
- total production share
Additionally, the degree of innovation, originality, importance and successfulness plays a big part in how strong the feeling of belonging/pride is, IMO.
But I have to admit, it's funny to see how a ripped-off design gets a higher mark or feeling of national belonging than a licensed design, developed into something unique.