Sorry, the next step after cloud isn't running your own DC's.
It's renting space from someone who is doing that for you.
The scale of cost savings/ownership as you scale kinda goes:
FaaS -> PaaS -> Cloud -> VPS -> Rented Hardware -> Rented space in DC -> Own DC.
Let's avoid conflating everything left of VPS with the most difficult form of it, because nobody is going there from nothing.
