Disclaimer at bottom of frame, during the lobby scene, reads:
"Matchmaking interview and DNA screening required. Customers with genetic abnormalities may not meet requirements for safety certification. No refunds after consciousness imprint. Default payments will forfeit DNA rights in perpetuity."
So the Walters are custom-made slaves, to fit DNA profile of their owners. The 'we' collectivity removes any nagging doubts of individuality/self-determination. Was it ever made official that we were sharing the Blade Runner universe, outside the Prometheus virals? Timelines don't exactly fit.
Overall I prefer the (with retrospect, ludicrously sinister) foreshadowing of the David 8 advert, that was done in the style of some sort of IT commercial, like Apple. Sort of subverted the nauseating smugness of those ads.
This was more like a contemporary BMW ad, right down to the type of landscape used and the washed out colour scheme. The way they use these aesthetics for the creation of sentient life is pretty chilling.
Also like how Walter is handed the same sort of bottle you attach to the side of a hamster cage.
As well as the resemblance of the endoskeleton to 'melted Ash', at a couple of points it recalls the dummy figure seen in the red band trailer.