Where does all of that money come from?
It is an attempt to attract the well insured top dollar patient who can choose hospitals.
One of the big Boston hospitals put up a new building, and then reallocated services. All the discretionary services (as in "choose what hospital will do your bypass" and "choose your kidney installer") were moved to the new building with all private rooms. All the services that attract the "can't pay but we have to treat you anyhow" services like burn and trauma were moved to the older section with double rooms.
There are lots of expensive treatments that people do not get unless they can pay (think bypass, cancer treatment - anything non-acute). The atriums are reserved for attracting these people.