> (1) A public utility, or telephone company, engaged in the business of providing communications services and facilities, or to the officers, employees or agents thereof, where the acts otherwise prohibited herein are for the purpose of construction, maintenance, conduct, or operation of the services and facilities of the public utility or telephone company.
> (2) The use of any instrument, equipment, facility, or service furnished and used pursuant to the tariffs of a public utility.
> (3) A telephonic communication system used for communication exclusively within a state, county, city and county, or city correctional facility.
> *(4) A commercial business purpose.*
Emphasis mine.
That seems wildly less limited than you imply.