offering a similar value
Therein lies the rub.
Only by the consistentcy of user intent to "~yield/produce/deliver value" does the platform (any platform) . . yield/have value. In Twitter's case @ ~140 characters at a time, which "limitation" has the benefit of containing the long-winded (:-/), compelling user focus on delivering value or die (due to attention budgeting, capacity to ingest info), etc.
How much of tweeting is built around yielding value?
Are the "value producers" desirable targets of whatever model Twitter will introduce to monetize the platform?
If not, will the non-value producing Twerps be worthwhile targets for sufficient ad dollars to support Twitter?
If not, is Twitter so inherently valuable that you would pay for it OR, if the circle of value producers is small enough why not just create a little threaded blog where you all can act as authors and commenters?
I suspect value producing circles are of a scale that, with a little initiative/imagination, they needn't be bound to Twitter's platform and they needn't broadcast their ideas to anyone other than the value producing contributors themselves.
There is a certain something to the conversations amongst marketers - for example, tweeting "as a siderail of the Cluetrain-rails" - perhaps to show/manifest their platform savvy to those concerned about the role of the platform.
I get a sense that there's also a whole lotta "give us a place in this evolution of how people choose and buy stuff . . please . . we're really not marketers, trying to keep or find our/a place in this new world order . . we're . . we're . . social media mavens . . neuromarketers . . . we're RELEVANT . . the conversation NEEDS US . . we're NECESSARY . . BELIEVE! :P"
Heaven forbid the Cluetrain actually leaves the station with the ~marketers and "conversation massagers/manipulators" (:P and :-/) left standing on the . . train platform.
Lord knows they sneak or muscle their way onto every other . . platform . . hosting the new . . social media . . Cluetrain manifesto . . "we're really us, the people, doing this markets thing ourselves free of those bad bad inflencers" . . conversation.
Bleh. Long-winded once again.