Yes that makes sense. Though, it would be hard to apply edits limits because the number of edits can vary greatly, independently from the purchasing power of a customer (for example a startup would change it's home page every other day while a large corporate would barely touch it once a quarter). The bandwidth or page views limits seem to be raising the same issue and the logic for us is simply to avoid server costs that would be too high for a single site that would pay a basic monthly subscription.