Clouds simplify my life. I like NetFlix for DVDs and online viewing. I much prefer Steam over my Physical CDs. I like iTunes for music and Amazjon for books. However, unlike NetFlix where I am a subscriber, Steam, iTunes, Amazon give me ownership in the cloud. They are fantastic, and I am happy now. But I am skeptical about the vendor lock in. What if i want my book on the latest non-Kindle, or my music on a non Apple device? What if the vendor hits financial difficulty? Will they eventually charge for those "free" downloads for content I own? If the company goes bankrupt, might I lose all the content? Accidents happen. When the cloud goes down, did the minimum wage cloud employee really backup properly? Do I have recourse when my identity is stolen and modifications happen to my cloud?
Understand that I trust the technical basis, and I enjoy the user experience. I am afraid of the vulnerability of the cloud because it is business centric. Conversely, no one is afraid of losing the Internet from any one business failing. I will trust the cloud when it becomes THE Cloud in the same way as THE Internet. Right now I have an Apple cloud, a Steam cloud, an Amazon cloud, etc.