Early optimization is the root of all evil, so I understand that an up-and-coming company might do this, but Dropbox has the traction and userbase to make this

Early optimization is the root of all evil, so I understand that an up-and-coming company might do this, but Dropbox has the traction and userbase to make this a very relevant concern. Popularity is also proportional to chance of being targeted by hackers and approached by government or corporation representing intellectual property owners.