Apple is also unlikely to use updates to OS X and iOS to implement code that prevents Dropbox from working. Doing so would only drive angry users away from Apple's devices and toward competitors that retain Dropbox support. Given that Dropbox isn't going to be accepted into the Mac App Store anytime soon, Apple can at best simply hope that Dropbox use declines as users increasingly depend on the App Store for all their software.
The bottom line: Don't expect a significant change from the status quo for the foreseeable future. That's fine with me. I'll take the status quo over the most likely alternative. But just in case I'm wrong, and someone at Apple is negotiating with someone at Dropbox even as I write this, I make this plea: "Stop what you're doing. Now. Walk away from the table. Leave well enough alone."
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