"Development clients are inherently unstable. If a dev client blows up on a client's machine and deletes all of his or her data - or releases it into the wild -

"Development clients are inherently unstable. If a dev client blows up on a client's machine and deletes all of his or her data - or releases it into the wild - the customer bears the full liability for having taken a chance on a dev client." How is that any different with a client that isn't "beta" or "dev"? What are you going to do, bring a civil suit against Dropbox because a bug corrupted your data?