For a computer, hell yeah. You can never have too much resolution. It gives you more screen real estate to multi task better. Multi monitors can get flacky especially in Linux, it would be awesome if they made monitors that are like 10,000 pixels by 3,000 pixels or something crazy like that and pretty much replace the need for multi monitor. Imagine playing games on something like that, too. Video cards have gotten so crazy powerful I'm sure it would not really be an issue. Heck I recall playing games at 1024*768 on like a 32MB card. Screen res these days is not really that much higher than that yet video cards are in the GBs and have processors that require huge heat sinks and multiple fans. Either they've gotten that much more powerful, or just less efficient.
Too bad something like this would be considered niche so no one really wants to make it and we're stuck at 1920*1080.