Worth solving? Undisclosed dual employment in remote roles

Talking about cases where remote employees secretly hold 2+ full-time jobs during the same working hours — without telling either employer.
Not side gigs. Not freelance stuff. We're talking full-time overlapping roles — sometimes even with competitors.

Some companies say it causes delays, IP risks, and even client poaching. Others say "no big deal if work gets done."
Is it worth solving with a SaaS tool?