Paying for what now? They won't host app for free, that's for sure. But I don't see how having the platform opensourced can hurt you as a customer. Whether you choose Red Hat or someone else.
Well, we do provide a level of free hosting - trying to keep it meaningful but it's certainly not unlimited. We will offer pricing plans for expansion and we also allow people to move off the platform (with their data) to another environment if they choose (see: rhc app snapshot).
We also wanted to make sure we open sourced the code itself. As you mentioned, that gives you some assurance outside of the service or any specific vendor.
