Do they allow of block data connections over their repeaters? If they block them then customers are pissed. "Why doesn't my email work? Why can't I get picture

Do they allow of block data connections over their repeaters? If they block them then customers are pissed. "Why doesn't my email work? Why can't I get picture messages?" If they allow them, people can set up wifi hotspots the same as they were before. Revenue lost from pissed off customers + cost of Faraday cage + cost buying and maintaining repeater network is definitely going to be higher than revenue from selling wifi.