My guess is that some businesses get tax breaks from municipalities in exchange for filling office spaces with warm bodies. The idea is that people in office buildings support local businesses by buying lunch, and sometimes grabbing a pint after work.
I’m not trying to excuse this trend, in fact as an IT person myself I 100% agree with the sentiment, I’m just trying to share what I’ve been told.
https://www.spamcop.net/anonsignup.shtml
I’ve been using them to report spammers (including companies who can’t be bothered to fix their mailing list unsubscription mechanisms). It works by parsing mail headers, identifying the origin of the email and submitting email abuse reports to the operators of the relays that processed the unwanted email.