Ok this is purely speculative, but follow me on this and maybe we can get somewhere.
Palm is not Nokia.
Nokia puts the feature sets their customers want (except for, evidently, a spiffy OS like WEBOS!) in their phones, because they are huge, and they can do pretty much what they want.
Sure, carriers disable the features sometimes, but they are still latent in the firmware.
Palm does not have that luxury. If palm put features into webos that frightened carriers (like native VOIP), then the carrier would just not carry the phone. Palm is not big enough (on its own) to launch without heavy carrier endorsement, so the carriers call the shots.
Now, its not like I -know anyone- on the -inside- or anything, so this is just speculation, but......
This is why there is no "microphone API" .... do you think it would take palm more than 6 hours to produce one if they wanted (or were permitted) ? no, of course not. Probably -in house developers have already written it- but cannot let it out until a 3rd party figures out a workaround and makes withholding it irrelevant.
Webos 2 may not have it either, unless a homebrew app comes out with it first.
PJSIP works, less audio connectivity. It remains up to those of us that have the skills to work outside of API-land to come up with a usable driver solution.
My point is, that as long as talented developers sit around waiting for the phantom mic API to emerge, we will not have a SIP client. But once the barrier is down, once someone takes the time to connect to the mic, we'll soon have the API.
Whoever does this will have the opportunity to sell their achievement for a while at least, for $10 - $20 a pop, no problem, and also license the method to others, possibly.
If they play their cards right, they might even be able to parley the microfame into a bigger company, a career move, get gobbled up by fring, or any number of othe profitable things.
This is the webos moonlanding folks!!!
Want a share of the action, here it is, waiting for the first one to bring it out.
It just can't be PALM who brings down the wall, get it?
Anyone who really wants SIP will gladly pay for it - they want SIP so that they can save money, and that has a cash value!