The piece on Coasian Hells notes that implicit and tacit knowledge is a key contributor to a problematic dynamic: that knowledge by its nature can't flow through the contractual barrier, whether the contract is a business relationship or an API. And what one means by privacy and security is frequently contextual and implicit, the costs of which are only known and borne upon a data breach.
But today we outsource all the things -- everything is #SaaS -- and we find ourselves in a Coasian Hell, where no one SaaS provider is purely to blame, and all end up seeming essential despite the mess.