Re: Before people jump...
32" Wacom Cintiq... £3,500, and that lacks the hinge of the Surface Studio. The hinge is no gimmick: it lets you do "drawing work" and "desktop work" with the same display - I've never seen a Cintiq setup that didn't have another, also very expensive, monitor sitting on the desk too, so in many cases the Studio would actually be a cost-saving option (!)
Like El Reg, I would really like MS to have offered a Video-in as an option, but the way modern computers are designed, I suspect that there's some place in the board design where a clever hacker could add a "bypass" video input once the motherboard is no longer viable..
The real computing load in media production is in final rendering, compositing, grading and editing. Actually drawing or designing the parts for a feature doesn't need very much computing power. In a large creative house (animation studio, ad agency, etc), these will be on the desks of the artists, but the render farm will be in a server room, and the grading/editing suites will still use "regular" high-performance workstation PCs...which will have monitors that cost far more than £3000 attached to them.
The economics of media production are about getting the maximum productivity out of each person - an extra two grand on tools for every artist's desk is not a big expense within a ten million dollar production (and ten million dollars puts you into the "small, independent" category when it comes to films these days) if it makes those artists even 5% more productive.