The thing I don't get: We'll now run those N unikernel things in VMs with a hypervisor underneath. How is that different from running static binaries in a locked-down OS, i.e., with a traditional kernel? You can surely break out of a unikernel by "popping the kvm" as the article mentions. How is that more secure? In principle we are running the same things, just call them differently (app becomes unikernel+app, kernel becomes hypervisor).