But you live in a country that does not have an insane fettish about guns.
Put a gun in their hands and see how polite they'd be.
We actually don't know if they were armed, but they didn't brandish any weapons.
It seems unlikely they were carrying guns. I'd say there is a decent chance one or more had knives or something. Who knows?
In our part of the world, at least, the breaking and entering of an occupied home is seen as a significant escalation, and has ensured actual police attention and interest. If they were brandishing guns, it might have ended up on Crime Stoppers.
My OP was slightly tongue in cheek. My wife did indeed firmly ask them to 'leave, please', which mostly comes down to her de-escalation training. And they did run, likely presuming the police were on the way and they were after disposable goods, nothing more. Were they drug affected desperados, or stupid boys playing at being tough, it could have gotten very ugly, very quickly.
I've seen enough real violence to know how quick situations turn, for sure.