1. The lecture halls were the easy part
Most campuses outfit the big auditoriums first, then hit the forty smaller rooms — seminar rooms, labs, faculty spaces — where one spec does not fit.
2. One spec does not fit every room
A 300-seat hall, a 12-person seminar and a teaching lab each ask the display to do something different.
3. One budget, one procurement process
A university has to buy for every room at once — and a hundred screens that are all wrong in slightly different ways is the usual result.