Well, if that was the case then everybody would be playing with AESA radars by now.
There lies a difference between coming up with a new technology, and finally fielding it on a mass scale. Not even the Eurofighters have been able to implement it. The Russians certainly haven't been able to yet. Not any time soon. Their priority would be their PAK-FA stealth fighters, and no one else (not even the Indian's MKI). Back in 2012, only one of the three PAK-FA prototypes were equipped with the AESA radar.
It's not like 'oh look, there's an AESA radar. Let's load them all up!'. It's not that simple.
There is no question that the Russians have come up with a sound AESA radar small enough to be mounted on an aircraft, infrared sensors and state of the art electronic warfare systems. However, there would lie a question on how well would all those subsystems be integrated and effectively function as one weapon.
That being said, the only country that had been fielding different types of AESA radars on aircraft over the years is the U.S. The recent one being the French with their Rafale - The only European country to do so (albeit on a small scale).
It took the Americans decades of hard work and billions of dollars into all those integrated and complex avionics suites into the various aircraft like the F-15 and the F-18. Particularly into what the Raptor is today.
There's little doubt that the Russians will field state of the art aircraft equipped with AESA radars - Namely the PAK FA. But, it is a question of when. It is also a question of money.
Israeli pressure? You are going to need a source for that.
And for those saying that Bangladesh must get some different variant from the MKI, uh....you guys do realize that the SM is essentially a Russian version of the MKI for the Russian Air Force's requirements right? Said to be India's 'gift' to the Russian Air Force