Having a fairly decent grasp on how cloud services work, I struggled with a company I worked for in their approach to their cloud service. They did have a month to month pricing model, but they required their customers pay for a year in advance and know how many seats they wanted in advanced as well. Despite trying to tell them thats not how cloud providers generally work, and most customers likely wouldnt' agree to that, they had to move forward and learn that on their own with very low sales of their cloud product.

So its not just the providers that need to learn its those writing cloud based products as well.