Casual use doesn't fit well into most tech company's business models. Their APIs made to work for casual use because they don't get used casually enough to make

Casual use doesn't fit well into most tech company's business models. Their APIs made to work for casual use because they don't get used casually enough to make the support costs of casual use outweigh the marketing gain for serious customers. If this was turned into a WordPress plugin that caught on and tens of thousands of people installed it on their blogs for casual use, I think Stripe would probably make it more difficult to sign up.