Things don't work in the real world like this. Greece, Turkey, the US, China, etc have all had their aircraft shot down and they chose not to escalate the situation further.
1. If Russia would have attacked Turkey over the SU-24 it would have triggered a war with NATO and Turkey would have overwhelmed the Russian air base and naval base which only has about a dozen fighters and an unknown number of SAMs. The end result would be Russia firing cruise, ballistic missile, SAMs, and electric warfare attacks so Russia would inflict at least the same if no much more destruction on to Turkey but it would not be worth it to lose both bases.
2. Syria shot down the IL-20, it would be rediculous to attack Israel even if they may have used the IL-20 for bait. Moreover, Israel has hundreds of fighters and many SAMs right on Syria's doorstep, they would easily whipe out the the airbase and naval port in Syria. Again just like with Turkey Russia would fire dozens of cruise missiles, ballistic missiles, SAMs and launch electronic warfare. Plenty of Israeli targets would be attacked including airbases, naval ports and so on, but again is it worth it? Especially economically?
3. Russia successfully jammed US electronic warfare aircraft. Russia has been jamming Ukrainian and western equipment in Ukraine too. Russian EW capability are probably better then Chinese and actually tested in combat. The reason Israeli F-16 have only suffered 1 loss in Syria is because they fly below radar coverage and fire standoff weapons. The IL-20 was flying high and can not outrun or outturn a SAM like an F-16, it probably doesn't even have flares since it was never designed to operate over contested airspace. It was shot down because Syrian SAM operators were firing wildly.