Yeah the impact is not so much to him, but more to Imjrb3's family. From what I read, the family including grandparents are used to using things like iCloud photo sharing. His wife and kids probably send him pics and videos via iMessage all the time. So, he could very well take the time to move his photos and documents from one cloud service to another. But guess what, he now has to ask everyone in his family to change the way they are used to doing things because he wants to leave the ecosystem. Imagine going to the grandparents and saying I'm going to download these other apps and you'll now look at photos using them. Then remember hows the kids used to quickly "text" those high resolution pics and videos? Nope, can't do that anymore because he's not on iMessage, and regular SMS won't cut it. He could ask the kids and parents to download Hangouts, but you can't send video through Hangouts. My point is, there are ways around these things, but it might not be worth the hassle of asking everyone to change their habits. But then again, it could be. That's a personal decision. If I had the grandparents comfortable with using all the Apple services baked into their iPhones, I wouldn't dream of asking them to change. But that's just me and these things may not matter to others.