With everything going towards the cloud, I would say we have a trend. We have everything from Office to Photoshop in the cloud now. To my mind that is reminiscent of the days of yore when we had dumb terminals and rented time on the mainframe and I don't see this trend ending any time soon. I actually envision more and more Software as a Service and more and more cloud applications.
Heck, I am forever using VNC to connect to a PC of my own and working from there. I see that as so very similar to the days gone by that I can't help but notice the similarities. It's also "trendy" these days so I think we'll see more and more of this for the time being. As someone mentioned above, the pendulum will keep swinging. How long before we have gone to entirely dumb terminals where even our OS is grabbed across a network and we work from there? At the same time, there will also be a viable OS on the chip itself which, I imagine, will be the pendulum swinging back in some regards. I'd expect some sort of melding.
Hmm... Come to think of it... I know lots of people who neither know how to configure or use an email client - even on their phones. They simply access the web and, to them, email is a web service and a web service alone.