Besides the impression that the OP is acting paranoid, the fact is that we are still going to provide significant after market business to Russian friends for a long time and as anybody will tell you, after market biz is lot more profitable. These include:
a) Engines for tanks, fighter planes, navy vessels, cruise missiles, air defense equipment etc.
b) Other spares for such equipment.
c) Super Sukhoi upgrade, most likely will be as big as the current rafale order.
I am not counting any new equipment orders (submarines, air defence missiles, etc)
So Russians are going nowhere. No other market has the capability to replace India as a customer for Russian arms industry for at least a few more decades (neither Iran nor Pakistan).