Proud custodians? Yes, they wrote the format and controlled it, but it was no different that a proprietary protocol; it was just a necessary way of allowing people to send data around. .DOC and .PSD in particular have always been proprietary messes that they wanted you to treat as a black box.
I was thinking more about OpenDocument, EPub, PNG. Things we take for granted today. It seems that once efforts transferred to the web companies simply have no desire to cooperate on their protocols. Even though cloud syncing is simple enough that dozens of companies have reinvented it, the companies don't feel any obligation (as I personally feel they have) to open up these protocols.
