Dropbox also against to ALL the online/web services. All the web services are using non-file abstraction of data. If all the apps go to cloud, Dropbox will be

Dropbox also against to ALL the online/web services. All the web services are using non-file abstraction of data. If all the apps go to cloud, Dropbox will be dead immediately. The problem is, that's actually happening now. So number of potential user of Dropbox is decreasing. Doesn't seem to be a long-term sustainable business if you believe web will conquer the world. Also, Dropbox can't offer very high level user features, or platform specific features. It breaks symlinks, erases file permissions. Dropbox drops many kind of informations which can be essential to high-end users. Their speed and capacity is too low for high-volume data users - such as media works. So Dropbox is losing potential users in both ends, and honestly, I don't know who will use Dropbox for what in future.