The tablet (no specific brand) is not intended to be a workstation
As such, your argument makes no sense. Tablets are intended to supplement the workstation by allowing things like tabletop brainstorming, presentation, marketing and simple but effective note-taking. Adding a voice recording capability into the device (available through any number of available apps) can mean that no point gets lost in a planning or production meeting. It also means that effort does not need to be duplicated as the note-taker then doesn't have to transfer hand-written notes into a workstation--just toss the file over wirelessly.
This is why so many people can't see the potential of a tablet device; they want it to be an all-out workstation which it can never be or they assume it's too limited to be productive in any manner. Answer me this: was that paper and pencil clipboard you used to carry around a full-powered workstation? Think about all the documents you carried so you could annotate inspections, mark off checklists or simply review and hand-edit a report. If you think of the tablet as an electronic clipboard, you'd be much closer to what a tablet can do in the enterprise.