The only positive way to respond to a letter like that is to go out and do it. A press release reiterating the same old lines isn't going to solve anything; addressing concerns internally and releasing real products should be their response.
How would that be better? If they aren't listening, that would be a lie.
And from the open letter saying "RIM has a culture where nobody can speak out without fear of career limiting punishment" their reply is "I can't believe any real employee wouldn't raise these issues internally", does that sound like they even thought about the letter for five minutes?
A better (more honest) reply would be "we don't think there's a problem, Apple is just luck and hype, the playbook is industry changing (Mike said that, didn't he?), this better not have come from inside or else".
"A better (more honest) reply would be "we don't think there's a problem, Apple is just luck and hype, the playbook is industry changing (Mike said that, didn't he?), this better not have come from inside or else"."
If that's really what they believe then they're in more trouble than anyone could have imagined.