Homa protocl can be deployed on the basis of existing switches (not all of them, but some of them will play well). See also https://github.com/PlatformLab/HomaModule .
In addition, a closed environment and the SDN's popularity in large data centers is a significant cost-reducing factors compared to typical IPv6 deployment.
Dumb question, there's no way to talk to a PC over the Internet with Homa, right? Since our home ISPs + routers are all only doing UDP/TCP over IPv4/IPv6? Homa is mainly for "LAN"?
In addition, a closed environment and the SDN's popularity in large data centers is a significant cost-reducing factors compared to typical IPv6 deployment.