It has already been built. Bane's point is that why doesn't dropbox buy THOSE services and see if they can expand on it. For example docker.io is a paid service

It has already been built. Bane's point is that why doesn't dropbox buy THOSE services and see if they can expand on it. For example docker.io is a paid service for the above use case. Dropbox might be getting a cut from them, but if docker has successfully demonstrated that there is a market for this, wouldn't it be better form dropbox to aquire them and push in that direction?