One of the problems you're going to run into is simply that the switching costs for an enterprise size company looking to change from a CMS like this are going

One of the problems you're going to run into is simply that the switching costs for an enterprise size company looking to change from a CMS like this are going to be huge. People are going to want retraining and orientation of a level that most early stage startups just can't support. That's why with enterprise software it's not the product that matters as much as the supporting infrastructure.