Not at all. People are not hired to work solely on one feature and that’s all they work on forever. Those members of staff work on the development of lots of features over time. Not just one.
There are however entirely different people / teams working on vehicle development to those working on features. The comparison you are trying to make doesn’t exist.
I’ve always imagined the teams working on the “big 3” as one big company with a lot of peoples, motivated like in the wolf on wall street, whereas on some others nations it would be one guy, in the closet on the verge of retirement, fighting between the game’s coding and the cobwebs on the ceiling.
And the Hunter one is fine so long as Switzerland becomes a subtree, but India is already a subtree, if you’re fine with the Swiss Hunter then anything Indian should be fine for Britain, right?