The problem with things like this is that it's doubtful whether this product will be ten times better than the alternatives, which is how much better it needs t

The problem with things like this is that it's doubtful whether this product will be ten times better than the alternatives, which is how much better it needs to be if it wants to displace the entrenched players, which already enjoy some lock-in through 3rd party integration. Simply offering a cheaper and open source alternative or a free alternative that requires somebody to link it up with Dropbox doesn't cut it. There has to be a killer feature, in my opinion. Your average user will initially shop around for a service, stick with the one they find, and stop then simply stop considering alternatives unless the alternative is simply amazing or all their friends are using it.