What programs reside on your hard drive?

Gartner on Monday said that sales of Chromebooks will reach 5.2 million units worldwide this year, with more than 80% of the demand in the U.S. That's an 80% increase in sales from 2013.
But this demand was driven almost entirely by education last year, which accounted for nearly 85% of Chromebook sales, according to Gartner.
... the Chromebook was attractive to the school system, especially because of its management, cost and low maintenance. School System CIOs are Sold on Chromebooks, ComputerWorld, August 11, 2014.
When it comes to technology, I hate to buy more machine than is needed to the job. And I am beginning to think about 90% of educators would do just fine with a Chromebook or Chromebox.
Just how many drive-based programs do people run anymore?
I use Photoshop Elements, iPhoto, and, uh, well, that's pretty much it. Everything else opens in a browser. And I am not such a sophisticated user of Photoshop that I could not do what little editing I do using an online tool. I need to move my photos and photo management system to the cloud.
The old standbys of Word, Excel, and Powerpoint have been replaced by GoogleDocs. It's painful to use Outlook. I don't edit video. The rare game I play is now online.
I wonder just how many teachers are in the same boat - able to complete nearly every task online using only a browser? Moodle, Schoology, Edmodo - all web-based. Gradebooks - web-based. IWB software may be the exception, but I don't see us replacing IWBs as they wear out and screen mirroring software takes its place.
As the opening quote suggests, Chromebook/Chromebox management compared to MDM for iPad or the re-imaging of desktops is a breeze. And one could buy 3-4 Chromebooks for the cost of a laptop.
Look to see the next big tech wars in school be Chrome vs regular laptop, not Windows vs OSX. I hear the banners flapping now...
So, what am I missing?