Tablets and Chromebooks/Netbooks have a completely different use.
A tablet isn't really useful when you're looking at doing productive (typing up a large document) whereas a Netbook or Chromebook would be a much better choice (Asus Transformer is an exception due to keyboard dock).
A Chromebook's main use is for web based work. If you're using Google Docs (or Aviary which is an alternative to Photoshop) a Chromebook makes sense as they are made specifically to use webapps or widgets.
If you're going to need an actual program (Microsoft Office) you'd use a Netbook.
If you need something that requires more processing power, and more RAM you'd use a laptop.
They all have their uses but each tool fits their specific task differently, even if there is a bit of overlap (You can use a Laptop for all of that, but you'd have lower battery life and they're larger).
To expensive for what they do.. I couldn't ever see myself having a use for one of these personally.. I keep a tablet in my car, a smart phone in my pocket, and a 17 inch notebook (desktop replacement) in my living room.. I think im all set.