I can see a lot of people doing their work on their phones and tablets, without a real computer. Lots of email, presentations, videos, conferences, apps, maybe some report viewing, etc. This fits well for people in management, sales, service, and even some technical professionals that aren’t primarily computer focused (doctors, dentists, etc)

Marketing not so much (lots of spreadsheets), deep development or system admin also (though most of my sysadmin work can be done on an iPad with a terminal, I like the multi monitor displays on a real computer).