the next killer app will be mesh net implementations , encrypted transmissions, supporting discovery,  and available on the digital store 

cool kids will join  ephemeral  groups and leave them before you can say snap

it will be a policing and parenting nightmare. not touching natsec for now

might be a business opportunity to build a protocol with an embedded back door, so that cody hardwood/hubertus bigend types can farm micro cultures with ease, secure in the knowledge of the digital umblical cord tying the new wave of skateboarders/cap-backwards-wearers to the beloved mainstream  that they husband

* didn't notice the bigend/hardwood theme until now

telecom behemoths would ignore it first, as a bunch of cool weird geeky half-humans with pink/blue hair would try it first

then a small company would rise to success on its prowess

there will be a cultural movement spread entirely through this medium, which begat which shall never be known

and in the compressed lifecycle of tech, especially  with something already prototyped ,built, and real world tested ( Chennai floods), I predict the timeline to be 2-5 years before biggies start offering it as a feature, simultaneously weakening it by using captured data to setup cell towers wherever mesh-nets are prevalent.

 https://www.geckoandfly.com/22562/chat-without-internet-connection-mesh-network/