I'm fully aware of the Turkish shoot down of a Russian aircraft in the past. The context is different at the moment. There's a hot war going on in Ukraine. The commanders and the alliance will determine in due course what it needs to do if and when it needs to do it.
Having the Estonian airspace violation, for example, occur simply a few days after an initial article 4 consultation could probably have been seen as very escalatory. The authorities decided not to shoot it down. I don't know. I'm speculating. I shouldn't be speculating, but I'm speculating. However, looking forward, the allies have since come out very strongly in reaffirming collective defence and reaffirming their desire to ensure allied defence and territorial defence.