Bandwidth mining is the next generation of crypto. Proof-of-Work algorithm is useless and pointless because it does not really provide any digital commodity. It's just a ledger. Mesh routers implemented with blockchain technology provide both a P2P ledger and a decentralized internet itself.
Mesh networks are the future of how we will transact cryptocurrenices. But that is it. Cryptocurrencies will still be secured by proof of work.