Sony U50/U70 attracts a complete different market then the regular computer/laptop users. So far we are selling most of our U50/U70s majority to a very specific target industry: i.e Police department, Security Defense related project, Hospital, etc.
I think I agree for typical end consumer, it is still not very appealing. Most people will have quite high learning curve to operate Windows application without keyboard and mouse. It is very un-natural 
The U50/U70 is actually pretty good when you install Tablet OS with it.
