Dont mix business with friendship.
This stand by India might hurt Russia temporarily, but once this phases passes and is taken professionaly by Russia,things will be easier to deal in future with no scope of any dispute among both the countries.
you earn respect, crying like this one doesn't help.
why russia should see india as a valued customer? india can buy weapons from russia or it can just piss off. there are not many choice in the first place. e.g. how many nations are going to sell you aircraft carriers?
if you look, we Chinese are must better at managing such relationship with russia.
first of all, let's be clear: russia was/is/and will always be China's biggest threat.
we bought their MIG craps, we cloned it and export it. many customers like it.
we bought their shitty Su-27 fighters, we cloned it and upgraded it, our air force refused to take any new Su-27SK crap made in russia. Now we even fit our J-11B clone with our own engines.
we bought their S-300, let's be fair, that is a very decent system, again, we cloned it and upgrade it. now I think russians should import some HQ systems from China.
the idea is simple: you just can't be nice to russians.