I think NATO do. I also think NATO will weigh up where the war is at and decide on the likely outcomes and whether escalation is tactically a wise move for either Ukraine or the West.
This calculation includes looking at Russian imputance at this point.
No one gains by increasing the risk of nukes.
There is a case to be made for Polish Air defence. There is a case to be made for more weapons and support.
Is there a case to be made for NATO soliders to go in, ahead of winter when there are already concerns about domestic unrest due to cost of living rises due to the war. Sending in soliders and having casualties higher than levels seen in Iraq or Afghanistan just won't play out domestically over a single issue like this.
Really is, you would need a lot more dead and a lot more of an obvious threat before you scale up to that, 'because politics'.
There were starting to be calls for talks with Russia. That's now most likely totally off the cards and this incident (if it turns out to be Russia) will only strengthen commitment at a time when Putin was banking on it waivering.