You actually think the cops pursue them? Theres a reason the prices are so high to make up for theft.
I was at an LCBO store about a year ago and arrived just after someone looted a bunch of bottles with a gym bag...there was broken glass at the entrance and people cleaning it up. I asked what had happened and they told be about it.
So I asked what they do in those situations when someone is stealing and they said "nothing".
Their procedure is to report it to police and to head office. They are not allowed to engage. Police only show up later to review security info/video, etc. Police will only show up immediately unless someone is in danger.
Chatting with one of the clerks they say it happens often. Some are discreet and only grab a small bottle and shove it under their jacket, but some are also more extreme and literally walk in with a big duffle bag and start going up/down the isles loading it up.
Repeat offenders are typically already known to police and are usually arrested for other incidents as well.
I don't expect retail employees to engage thieves. But that's our tax dollars walking out of the store. They should put it all behind the counter at the very least and not display it openly where it can be grabbed so easily.