I've been following Sony for twenty years or so. "Interop" is not a word in their vocabulary. There are many innovations such as Minidisc, SACD, and ATRAC that never truly took off because they wanted to run proprietary from end to end and own all the rights. They never took a lesson from why IBM's microchannel bus doomed the PS/2.

Proprietary standards hamper adoption and success. Many try to be Apple but only one can end up pulling it off.