Oracle have their own cloud, and they front it with Amazon's S3 API so that customers can move to them without changing anything. Oracle are even suing people for *not* choosing their cloud solution!
Oracle are money-grabbing hypocrites. You clearly have no idea how common a practice re-implementing an API is in IT, nor why vendor lock-in is bad for everyone.
You are welcome to your opinion, but when it is based on ignorance it's value is nil.