Plus they have already divided the workshare equally amone three countries (33.3%) I don't see them giving up on any.
The UK ? May or may not depends on their win/loss calculations
Italy ? Close ties for decades
Japan ? Strategic ally
We have no direct conflict of interest with these 3 nations and I think neither Japan nor the UK would keep us away or listen to the Greek lobby after they faced a new world order created by Trump. Trump may go but the order may continue.
For those who'll bring Cyprus problem with the UK to me, there's nothing for the UK to see this as a problem at all. No one except us recognizes TRNC and we're not going to attack Southern Cyprus. They know they're not going to take us from the northern side. So it's not that big deal as the situation keeps stable.
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Can it be that Kaan will be the multi-purpose jet and the GCAP will be the next air-superiority fighter of TurAF ? I mean if TurAF is willing to become much bigger and considering GCAP ?
Another idea with a much lower possibility; the UK and Japan are at a higher level of allience with the US than Italy is. Would Italy want to have Kaan's instead of more F-35's until GCAP is ready by any chance ? They won't be guarranteed for full control on their F-35's ever, unlike Japan. And the UK wouldn't need such guarrantees. Italy is not always at the same perspective as the US and this is a harsh problem for them now. This idea was focusing on Italy but it is also possible (?) for the UK and Japan too if we give them some guarrantees and create closer "deep" ties.
All depends on their thoughts if everything will go back to what it was or will not after Trump goes. I wouldn't risk it (as Italy) because it seems like Trump ain't going anywhere till 2032. I wonder your thoughts on these.