I don't think @eneroth3 was saying there are no laptop workstations, but that specifically in the workstations of her field – architecture, I believe – conventional, larger setups will be around for a couple of decades, and I agree. I know I'll still use one for that long, anyway. As a draftsman, I'm currently working on the largest project I've done so far – an aircraft hangar and flight school, and I can't imagine trying to keep the project under control on a screen the size of my palm.
I'm not denying the power of modern tablets; I'm saying that if you had to create, from scratch, in two weeks, blueprints, renderings, and animations for a 50,000 square foot flight school – interior and exterior – you would be thankful for two screens. When one works past midnight every night for two weeks, to keep the job on schedule, he's glad for an ergonomic chair.
I haven't heard that it's falling behind, maybe that's true, but to my understanding, SketchUp is more interested in "3D for everyone" than in "following the marketplace" – which I guess could mean that it will come out on the iPad, if the folks at SketchUp feel that they'll get 3D to more of the everyone. We'll see...
I'm saying that I don't see a need in my line.
@AngelArs What do you use SketchUp for, if I may ask?