How well does your architecture support your business model? Why do you claim this?
Can you demonstrate support for a new kind of business model? For example, if your current system is sold on an annual license, can you easily add support for some kind of concurrent license, in such a way that you can open a new market for your software?
If you're using a license manager, have you allocated enough time in your project plan to properly integrate it into your application?
If you are using a license manager, have you examined their development roadmap to make certain it supports your own?
Are your target customers likely to be innovators, early majority, majority, late majority, or laggards? How does this characterization affect your business model?