An argument to be made that multiple cloud service providers is good for security. Forbes published a piece noting the average U.S. corporation utilized six different cloud services vendors, in many cases, as a hedge against this very lock in problem. Having encryption keys stored in one place makes that one place ground zero for cyber thieves. Having to gather a single keys components from multiple locations would not be worth the risk when there are easier targets to hit. The average cost of redundant cloud vendors is $3,000,000.”]
Source: https://www.csoonline.com/article/3202750/welcoming-the-clouds-in-our-eyes.html