Everyone knows that 2MB blocks won't scale Segwitcoin that much, a second layer solution will still be needed. That's likely where Metronome comes in. Why wouldn't Garzik have essentially the same business model as Blockstream? Difference: he's smart enough to have a team who keeps their mouths shut and does what he tells them.
From my limited research, it's my understanding that Garzik is not dumb and he has plenty of ties with law enforcement and government agencies. My prediction is that Garzik will slowly start adding tracking and identity features to BTC. By that time the smart money will likely have exited to alts.
It baffles me why the Bitcoin Segwit Core advocates -- who claim to distrust the miners so vociferously -- are able to look away from the trust they need to have in miners due to this issue.
Excellent points, and I like the new term!