the easiest way .... have the customers use vpn instead. me as provider had the same issue with AT&T, they would block my servers within 1 to 3 days of streaming. what i did, is i sold the streaming devices to customers already set with VPN.. only to users having this ISP provider. and of course gave them warranty.. if they get blocked within a week (usually happens sooner) I will stop by, pickup my device, and refund 100% their money. before using this VPN.. I had to refund 2 or 3 customers.. then I stated using the VPN.. and i have not refunded anyone so far.. the VPN solved my and theirs issues.
please test and have the customers use vpn.
Oh by the way .. I provide free VPN to my customers who need which again are only at&t users. of course i pay yearly for VPN, but I keep my customers happy. watching tv! at the end there's still profit.