SU-57 non sense started again here. Let me refresh some memories for some folks who were in diapers at that time perhaps.
Before refreshing old memories, can't you all ask one simple question about SU-57? If SU-57 is wonder shit why Russians haven't inducted in massive numbers? Even Russians don't have confidence in that aircraft and you are expecting us to induct into our air force? What is wrong with you people?
Now the old memories
After our success and satisfaction with Su-30 MKI, in 2009 our air force wanted to go for 5th gen aircraft. They convinced UPA-2 government to invest $250 million into this program which we called FGFA (Fifth generation fighter aircraft). Now that money maybe peanuts today but that was in 2009 when forex was barely $200 billion. So it was lot of money back then. And we were investing in research and development. As everything with Russians these days lot of that money went into some corrupt Russian politician pocket and they churned out a sub standard prototype.
And guess what if reports are to believed they did not even allow IAF officials to inspect the prototype. So anyway our guys thought there is still room for improvement and maybe future iterations would be better and asked DRDO to negotiate with Russians for some 200-300 of those aircrafts. That's when Russians gave us the bill. They asked $30 billion for further development and delivery of these aircrafts. Basically, we were being asked to invest in their military industrial complex with no technology transfer. So we should give them the money for a product which doesn't exist for research and development. And they will deliver if (a big fucking if) they succeed in making a satisfactory product according to our requirements.
Russians were milking us just like the way they milked us to deliver INS Vikramaditya aircraft carrier. Initially we paid $800 million to deliver the aircraft carrier, then they jacked up the price 3 times to $3 billion to give us the finished product. This is the reason DRDO said fuck it with that investment we can stimulate our own aviation industry. Whatever collaboration we have with Russians today are only in certain areas like missiles(

, Astra MK2 etc). We might have bought S400 but you already see we are already working on Project Kusha our S400 equivalent.
In short, we can and should no longer rely on Russians for critical equipment like fighter jets. In fact, we should not rely on anyone. We got to build our own military industrial complex if we have to be strong and resilient nation. So cut the crap about SU-57.