It is a shame to see RIM go down like this. I doubt they'll totally disappear any time soon, but they clearly can't afford to maintain the status quo, either.
The enterprise market will let them hang on by their fingernails for a while yet, but their high-end consumer market is pretty much gone.
Honestly, I really want them to succeed--not only because competition is healthy, but because I *like* hardware-based keyboards. I refuse to buy any of their current phones, since BB7 is clearly on its last legs...but I'd like to see them pull a rabbit out of their hat with BBX.
My contract renewal date with the Death Star is in November--I'll be away at school then, but over the Christmas break, I'll be in the market for a new phone. Round about then, I imagine there will be first-gen BBX and WP8 devices, along with the standard turnover of iOS/Android phones. I love my Samsung Focus (WP7.5), and would happily use my contract upgrade on another WP device--while it's true that the software ecosystem is a bit small, my primary "apps" on a smartphone haven't really changed in the ~6 years I've owned a smartphone...internet, email/messaging, and camera. Everybody's pulled that one off well by now, so the rest is pretty much a non-starter for me.
That being said, I'll happily consider everything on the market by then--I'm pretty much brand-agnostic*. I'm pretty much RIM's best-case "new" customer. I'd love for them to win me over, but I wouldn't bet big bucks on it. A Verizon exec was recently quoted as saying VZW would like to see Windows Phone provide a viable 3rd ecosystem for consumers, along with iPhones and Android devices. The silence regarding RIM is deafening (and sent the RIM fans over at Crackberry crazy)...when one of the top-tier US carriers is implying that RIM is no longer a priority, that the yet-to-be-well-established Windows Phone (which has gotten terrible Verizon support) is of greater import...well, you know there's trouble.
*I've owned and enjoyed phones representing pretty much every major software platform in the past few years, from Symbian (both UIQ and S60) to BB6 to iOS (1.0-3.x, 4.x), Android (1.5-2.2). I buy what looks good at the time, and try not to get tied into an ecosystem...