Fighter jets are not immune to normal economics. If the material costs of production inputs go up, then so will the cost of the fighter, unless there was some pre-agreed binding contract which locks in the price, which in this case there was not. Switzerland should have negotiated a guaranteed price given how long the timelines on delivery were.
> there was some pre-agreed binding contract which locks in the price, which in this case there was not. Switzerland should have negotiated a guaranteed price given how long the timelines on delivery were.
Which in most cases is the norm. From what I understand, the Swiss deal is mired in federal corruption with the then defence minister, Viola Amherd, going for the most unfavorable terms.