The problem with reporting is it's actually a liability. You're legally responsible for reporting accurately to shareholders so there's a non-trivial amount of work to ensure you get it right. You could do that in real-time but there would be a significant overhead to it. There are also other problems, for example the sales team will always make sure their paperwork is completed in time for the end of quarter to hit their targets, if you're reporting continuously you're going to see a lot more noise in the sales reporting figures that gets averaged out by only reporting the quarter. You aren't gaining information by reporting more often, you're just exposing your investors to a noisier signal.