No no, not kill switch.
I meant it might be through long term logistics problems or refusing to arm them with domestic munitions or foreign munitions.
Also, the supplier country does have a lot of power to stop it by policy, like Germany's Turkish Leopard 2 upgrades, due to human rights, or America's Abrams contracts being suspended due to use by militias, etc.
Ah, ok. You're absolutely right, especially the arming of foreign munitions part is a particularly sticky point with the French, which is the primary reason for Singapore choosing the F-15 over the Rafale because of their primary inventory being F-16s and other American aircraft. It seemed bizarre that they wouldn't allow the Singaporeans to mount US munition since the Rafale is quite capable of doing that and would've helped the sale, but it's a bit understandable since they wanted to showcase strictly French caps only and not be tied in with the US. 2 engines = always better than one in every single situation.
rafale is costy in terms of flight hours operational cost hovers around US$16,500 (2012) for every flight-hour. The Saab JAS Gripen, in comparison, costs only US$4,700 per flight-hour to operate.
That's true, for smaller countries it would be better. But there are a lot of reasons for the cost difference, primarily that the Rafale is a dual engine aircraft and the Gripen is a single. Plus there are other systems on the Rafale that don't exist on the Gripen which give it an advantage, hence it is costlier. The Rafale also has two major items that enhances its capabilities over the Gripen and those are SPECTRA as well as its
advanced data-fusion cockpit which lead to the additional costs. Also Rafale has IRST while Gripen does not (maybe NG does or will but not 39C.) You basically get what you pay for.
and why i consider rafale is junk is here failed bids history
Brazil Rafale loose to Gripen
This reason wasn't because Rafale is junk (which is a ridiculous premise to begin with no offence), it was because Saab offered a joint development program for Brazil which included ToT that was very enticing for the Brazilian air force because of the F-X2 program in Brazil. Mainly the offset rates that were offered by Saab were going to help several, local Brazilian industries that were going to contribute to the development of the Gripen. Brazil was going to have access to all the Gripen's technology by the end of the development phase. Rafale wasn't offering anything of the sort and why should it?
The F-18 Super Hornet was also part of that program and just because it lost doesn't mean the F/A-18 E/F is anywhere near junk, lol. Quite the opposite.
Singapore Rafale loose to F-15
That's pretty simple and I'm surprised Dassault even participated in this competition knowing quite well that the Singapore Air Force is completely dominated by US fighter jets and that they wouldn't want to showcase any US weapons on the Rafale during the competition. Besides, the F-15 is in a league of its own (it is not a Medium Combat AC) and I doubt the Gripen would even come close to it either.
Switzerland Rafale loose to Gripen
Here's the basic and briefest explanation of that competition:
Switzerland has chosen the Saab Gripen as its new fighter aircraft, in preference to the Dassault Rafale or Eurofighter Typhoon. Defense Minister Ueli Maurier told journalists that the Swedish package including 22 jets is worth $3.4 billion. The Gripen is not the highest performing of the three contenders, he said, but it meets the Swiss requirement and offers the lowest acquisition and maintenance costs. Swiss media earlier reported that the Eurofighter offer was about $4.3 billion, and the Rafale in the middle range between the Typhoon and the Gripen.
So you basically get what you pay for like I mentioned before.
South Korea Rafale Loose to F-15K Slam Eagle
Same thing as Singapore except on a much larger pro-US level. Think of all the close, political but especially military relationships South Korea has with the US since 1953 and how SK is basically under the US' complete protection. This was a no-brainer they would pick the F-15K. Doesn't mean the Rafale is junk AND I highly doubt the Gripen would've even come close, either. The F-15 is just a completely different beast (not a Medium Combat AC) and I have no idea why Dassault even bothered with this one, lol.
Rafale is operated only By 4 Nations in other hand JAS Gripen is Operated by 7 Nations and i hope Tunisia make them 8
And how many of those 8 countries are operating the Gripen under a "lease" program and haven't necessarily bought them? Saab offers that kind of lease program where almost no other country offers anything remotely close. Besides, that count doesn't matter since the MiG-21 was operated by 52 countries in its heyday, but was it anywhere as good as the Mirage III/V or the F-4 Phantom that were operated by a handful of other countries?
Also, you forgot to mention that the Rafale beat out 5 other aircraft in the Indian MMRCA competition in the Typhoon, the F-16C/D, F/A-18E/F, MiG-35 AND the Gripen.