If India panic buys fighter jets as a response. It will most likely be the F-35s. The SU-57 or KF-21 won’t come fast enough in sufficient quantity. Could be amusing if they buy several dozen F-35s. That could kick their domestic fighter program straight into the gutter for the next couple decades.
I presume that India would be too proud to accept the conditions for operating F-35 as presented to Cuckada. I doubt India can accept a subscription model for their fighters.