OP asked what stops people from switching to BSD. I agreed that for me, too, the missing Docker toolchain/runtime is a dealbreaker for me, as I have to work with these technologies on a daily basis. As Docker and friends see rapid adoption, others will think twice whether they switch to a BSD and have to run a Linux VM, too. I'm not sure what you're after here. You seem to think that Docker and Kubernetes are "fad technology" and are inferior to some alternative? Which orchestrator would you recommend? Which container tech?