When are mobile phone companies going to standardise accessories?

Question

Up to recently, my household had 5 makes of mobile phone, not one that can share a charger, usb or headphone.
We decided to use one make only to eliminate the clutter.

I suppose this applies to gaming consoles as well (eg: SP2 cannot save SP1 games and cannot use SP1 memory card. Console gamepads are incompatable with PCs)

Answer 1

Well, they make lots of money out of accessories. Even to the extent that my Orannge SPV500 phone charger has a standard mini USB connector, but there is an exchange of credientials between the charger and the phone so that only the correct charger will charge the phone.