I believe that the time of cloud providers like Dropbox raking in profits, whilst accepting absolutely none of the liability is coming to an end.
Right now Dropbox has tens of millions of its customers who entrust some of their most valuable personal and business files to a cloud provider who does not give them an SLA and who fails to properly insure their customers against data loss, downtime or cyber attack.
It is one of the dirtiest secrets of cloud and something nobody talks about ever. I would argue that Dropbox is an accident waiting to happen and their customers will be left holding the can. Only a matter of time I believe.