I seldom buy drinks at PI or anywhere on Disney property for one simple reason. They are too expensive! The last time I bought a beer at PI, it was $6.50 for a can of domestic beer! YIKES!!!
I also got to thinking, if PI were turned into more shops and restaurants, the busses wouldn't have to run until 2am. The last driver for any bus is responsible for cleaning the bus for the next day. Without a bunch of sick drunks to ferry around, the drivers could most likely leave when their shift was over; instead of being paid overtime to clean "sick" out of the busses.
This, like any other business decision, is tied to the dollar. PI is prime real estate that must not be bringing in enough $$ to turn a tidy profit. So,,, time to re-vamp.