It should be obvious by now that the Russian bomber was not shot down for violating Turkish airspace. This was a tactical move by both sides, each for their own strategic reasons (better explained in many posted analyses in the international press, from all sides) that has been brewing over for the past few weeks.
Turkey has been violating Greek FIR, as a matter of daily routine for as long as anyone can remember. In all cases, sometimes several times a day, Greece scrambles F2000s or F16s to intercept and identify. This is based on a different type of dispute (one over territorial water and continental shelf rights, EEZs and so on). Most of the intercepts end uneventfully, with the Turkish jets leaving the area, once identified. Some result in dogfights (in the good old sense) and FOX3s before the Turkish jets leave the area. And (fortunately not often) some have resulted in tragic misshaps with loss of life on both sides.