Unless Skyrim is a total disaster rushed out the door 1/2 finished, it's unavoidably going to set the new standard for FRPGs. After all, SOMETHING has to be the standard by which all other FRPGs are judged. Oblivion has had that honor for the last few years but it's obviously dated now so the industry needs a new standard. There are other quite excellent new FRPGs out there now, but none of them will sell anywhere near as many copies. Because Skyrim will sell so many copies, nearly every potential customer of FRPGs will have seen it, so it's the logical choice to compare other games to. Thus, game companies for the next few years will copy Skyrim's good points and try to improve on its bad points, and you'll see comparisons in reviews like "It's like Skyrim only without X but with Y in addition."
But this really doesn't matter because Bethesda games with their open worlds are apples and oranges to almost all other RPGs. Of the "5 reasons Skyrim will change gaming", 3 of them have been standard Bethesda RPG features since forever and in all that time, hardly anybody else has followed suit. The only ones that spring to mind are the "X" series of space games (a new one of which is due out soon) and, to a lesser extent because there's no magic, the "Mount and Blade" series, both indies that have devoted, but relatively small, followings. For the most part, everybody else has kept on doing more or less script-driven RPGs. This hasn't stopped these others from being successul in their own right, either. For instance, I love "The Witcher" games, but in them you have no major choices--you're stuck playing this 1 specific guy who has to follow some specific main quests. So you can only compare them to Skyrim in terms of graphics and interface because they're trying to do completely different things.