That example is definitely not similar to the StatSheet model. I'm talking about selling pieces of a free web site. You can't use the razor without buying the blades.
Yes, but that is your implementation of the freemium model. There are other sites, including my example, that allow free access to their data on the site, but then sell the data (in one form or another). You use embedded stats, iBegin uses datasets, other companies might charge for their API.
I'm actually highlighting how your business model is just a single execution of a broader method of conducting business. However, in the sense that your end product differs from the other examples, yes. If you really want it that bad.
And there are no legal issues if someone does this to my content.