We do certainly not want to keep Ice proprietary. If this were our plan, we wouldn't have made the source available, so that everybody can look at the internals. We will also publish a draft chapter that describes our protocol very shortly.
We believe that Ice can be a CORBA replacement in the long-term. Ultimately, it will be up to the users to decide, by either embracing Ice or sticking with CORBA. This can certainly not happen overnight, as it will take some time for Ice to develop mind-share. This is also our most important goal for next years: To actively promote the use of Ice in both open source and closed source projects. So expect to see lots of ZeroC conference talks and papers in the future
As for standardization: We would certainly support this, but it might still be a little bit too early.