You keep bringing economy to discussion about FC simulation. When I talked economy, I got permanent warning.
Russian/Soviet Air Force did not upgrade its Su-27 fleet for two reasons. First, obviously, Russia was short on money. Second, Russia did not need to upgrade, Russia did not fight wars where it needed R-77 capable Flankers. But, there is plenty of evidence that Sukhoi made or upgraded Flankers capable of using R-77. Therefore, it is not a stretch by any means to simulate R-77's on Flankers.
Because People like Flankers and Flankers are fully capable of using advanced weapons. Developer decided to model the first generation Flankers and the second generation of Eagle. People want updated Flankers as well. Finally, we could just put India as a Country on the list and then having R-77's on FLankers would be all right?