Don't get too excited. While this is indeed a real chance, it is still a slim one. We still have to find someone willing to pay millions of dollars for a closed game that is 9 years old and had a dwindling subscription base. At a time when people in the business are saying the days of the MMO are over.
Of course, the dwindling subs were covered by the addition of microtransactions, but that requires that a potential purchaser be interested enough to look into the details past the not-so-attractive obvious. That, above all, is why we need to keep showing that there is demand and market for the game.
I wonder when someone is going to realize that the whole "mobile" revolution could actually enhance MMO's, I imagine a savvy entrepeneur could make some kind of "mini-game" app that ties in to the bigger MMO, letting players continue to "advance" in some way even as they are commuting to work, during their lunch breaks and even during slow days at work.
Unless I'm mistaken plenty of Xbox360 games have already done this, I remember some app for Fable 2 (or 3?) where you could earn money in the downloadable app and then later transfer it to your game.
AFAIK Blizzard is currently the only MMO that does something approaching this, you can get an app that lets you use your guild's guildchat from a mobile device*, lets you manage your Auctions and you can browse the Armory.
I know SWTOR wanted to do something similar, like a system where you could send out your companions on their gathering/crafting/mission skills - but they never pursued it (or it's something that's still under wraps).
Heck, you could even tie it in with a browser game that works on both desktops and mobile devices.
* It even shows guildies that this person is using a mobile chat by adding an icon to their name - so they know not to invite them to groups and such =P