Based on the question, it seems that the person who would be motivated to play such a game would be a person with a Killer player type.
Killer player types are motivated by competing directly with other players, so they want to know how their performance compares to others. This is part of a group of player types conceptualized by Bartle, which includes achievers, socialites, and explorers – each with their own motivations.
Killer type players may be motivated by competition (defeat opponents), mastery (dominate weaker players), or social interaction (taunt other players).
0.75 miles of range is a low distance for a WAN (Wide Area Network) so a point-to-point WAN tehcnology such as IP-sec or SD-WAN can be preferred. But the least expensive option would be choosing IP-sec as specified in the question.