If you don't control the system it runs on, then you are completely at the mercy of someone else's business. If they go broke, your software goes down. but, co

If you don't control the system it runs on, then you are completely at the mercy of someone else's business. If they go broke, your software goes down. but, couldn't you make this argument about many things? your company's payment gateway? your bank? ISP? server host? etc.. your business will hit the breaks if there are any major hiccups with the providers of any of these services. i mean, its contextual, of course. if you've written a twitter app, its different. its not an app being built with the help of an api, its an app being built specifically for an api. but a single business makes use of lots of services, and an api is just a service.