Although we sing the praises of Prezis non-linear format and want everyone to be using it to create beautiful presentations, there's a lot to be said for a piece of software that's stuck around as long as PowerPoint has.
PowerPoint gave everyone in business the chance to be heard. Anybody could create a slideshow and make their message one hundred times louder than it was with just them saying the words. It added a visual element to important business messages, it was fairly easy to use, and has now become a standard piece of the kit that you expect to see in any organization. Credit where credit is due, those trusty old linear slides have helped most of us in business to create some decent enough presentations in our time.
But this is a different time, and the people joining today's workforce are very different thinkers to those from the good old days!
PowerPoint was created in a different decade, when people wore different types of suits to work, bread and milk...