Has the Blackberry and RIM Jumped the Shark?

When something "jumps the shark", it's said to have passed The point of no return and is destined for a slow or quick slide into obscurity. The phrase is usually used to refer to TV shows, celebrities, and anything else involved in a defining event that sets the rest of their existence towards has-been status.
Possible case in point: RIM's continuing failure to maintain its Blackberry service. As The Boy Genius reports:
It's poor form. Following the notorious blackout last year, RIM promised that it would never happen again. Hollow promises, as around 80% of all Berry devices in the continental US have been affected by a service outage that began around 3 am this morning. No carrier has been spared, with reports of crippled devices from Verizon, T-Mobile, AT&T, Nextel, and Sprint.