It will take some time before the above items happen. This could happen 2 years from now or even as much as 10 years from now. The 6bone today can be considered analogous to the Arpanet in the 60s. Arpanet was a testbed for new ideas and technologies in its beginnings. Similarly, the 6bone gives users and providers a safe environment to learn about IPv6.
Businesses typically change infrastructure for a few reasons.
New technology will be cheaper to operate and maintain than the currently installed one. Critical new business applications have requirements which cannot be met with the existing infrastructure. ISPs require their customers to connect via IPv6. The investment in both time and money to train personnel and to upgrade infrastructure needs to be offset by compelling business justifications. Transition plans are always important when migrating to a new technology, and the IETF has developed plans which will help customers.