The Turkish pilot who shot down was persecuted by Erdogan:

> Erdoğan announced in an interview that the two Turkish pilots who downed Russian aircraft were arrested on suspicion that they have links to the Gülen movement, and that a court should find out "the truth".

Russia didn't tuck its tail, they deployed SAMs to their Syrian base, they deployed the late Moskva in the region, and they pressured Erdogan to punish the pilot.