I went on a little adventure the other week of setting up my own NAS server, and checked out Owncloud and competitors. Even ignoring issues like feature parity

I went on a little adventure the other week of setting up my own NAS server, and checked out Owncloud and competitors. Even ignoring issues like feature parity and third-party app integration, I think the setup costs of something like this are still way too high for consumers. While VPS providers may make this process easier (even deploying complete Dropbox clones with no tech knowledge required), they'd still be doing it at a significant disadvantage to Dropbox's scale and expertise. It was clear to me very quickly just how much work has gone into giving Dropbox the level of polish it has. Note that this doesn't even address other competitive moats such as brand recognition and distribution partnerships. Not saying that Dropbox doesn't face business risks -- but I think the open-source alternatives will not be the biggest risk ulttimately in the mainstream market. I do think they will face margin pressures as long as Google/MSFT/Apple/Amazon believe this to be too important of a market to cede to Dropbox.