I would rate it as a concern. Probably not “HUGE” concern but it is impacting thing.
I work loss prevention, so I have a slight bias. But I also see how often and to the volume that it is. There are individuals I have helped with that are linked to 6 digit worth of stuff (and then of course money theft but that’s a different ball game).
Yes if a company has 30,000,000 in sales, theft seems less a problem until it gets multipld out hundreds of times a 1,500,000 of saleable items being stolen can and is something that happens with the current security stuff. And while that is 1/20 the of the sales that 30 mill is before paying for the product, utilities and salary.
Profit is still there but it is getting harder to hold that profit and new ways to loose/new scams pop up all the time