I think these are good points, but in my mind they all can be integrated together by actually promoting RSS as a main transport and updating mechanism first.

If businesses set up and educated their employees on the simplicity of using feed readers to aggregate news of value to either the business or the employee, changes would start to happen. For example, latest versions of Outlook or Lotus Notes will display feeds, so it could be easily integrated without a lot of new technology for the end-user.

It wouldn't be as big a stretch for late adopters to understand a wiki, blog or bookmarking service if employees could first see changes to those platforms in one place and understand the way one can quickly scan changes and only visit those they find of interest.