There is a new breed of FRS radios out now that are specifically designed for business use. Cobra makes a couple of models for businesses such as restaurants, retailers and other small businesses that are fairly rugged and are IP55 dust and water resistant for use in onsite applications.
DeWALT recently introduced two models of their own that are designed for businesses such as onsite construction, maintenance and repair companies, as well as mom-and-pop businesses.
Coincidentally, we just put out a podcast on how the rule changes in 2017 have enabled more proprieters to use FRS radios for business, and manufacturers to build radios specifically for that market. You can hear it in this thread.