Why not make it mandatory (otherwise it will be a factor of competition to not have one) to install airlock-like gates in stores that sell expensive stuff, like

Why not make it mandatory (otherwise it will be a factor of competition to not have one) to install airlock-like gates in stores that sell expensive stuff, like they do in banks? These can also detect weapons. I don't think that these smash-and-grab thieves will dare to upgrade themselves to armed robberies or hostage taking in this case, because that easily carries a death penalty which, given how many cameras are everywhere, will be nearly impossible to avoid.