You don't need one! Exclusive telecom provider agreements with multiple-dwelling units (MDUs) have been prohibited federally since 2009.
Now, it's a fair bet that the current FCC leadership will flip on this - they published a "Notice of Inquiry" to "seek comment" on what they're now calling "multiple tenant environments" earlier this year: https://apps.fcc.gov/edocs_public/attachmatch/DOC-345161A1.p...
But for now, exclusive provider agreements like this are not actually enforceable.
We could use such a law in California.