Because they can easily move the goods online, which wasn't the case until recently.
Unless we arrest, prosecute, and imprison them. Or punish them other ways; how about flogging? It's arguably both a better deterrent and more humane than prison.
Saying "Sure, go ahead!" is better for no one.
Why not hire competent investigators to infiltrate and bring down this new model of highly profitable criminal operation (pay boosters -> warehouse goods -> move product online)?
Instead all ya got is lOcK Up TeH BooSterS?
Here in Maine, our max fine of $1000 and/or a jail sentence of up to 180 days for theft sounds about right, but in turn I'm supportive of efforts to lower the local incarceration rate: https://www.prisonpolicy.org/profiles/ME.html