If a power user needs to do all of these things, chances are they aren't going to even think of trying to do this all on a tablet ala iPad. People use tablets to do simple tasks (check email, browse web, basic photo/doc editing, etc) that don't require something at least as big as a laptop. It's supposed to be a simple environment for doing simple tasks quickly. It's meant for people wanting a device that Just Works (TM) without getting bogged down in trying to get App A working with App B with App C with App D. This really is a non-issue and will always be one.

If you need to do some heavy work, do it on a laptop. You can buy tons of different laptops now that are very thin and don't take up much more room in your backpack than a tablet would. If you need any more power, then rent a compile server. There is always going to be a cost for having a portable device, it's that you won't be able to get all of your work done on it.

The real issue is when OS developers try to push this simple, tablet environment to devices that shouldn't need it.