Re: Add-ons become obsolete with the phone... and if they're not very cheap....
> outside true industry standards you rarely see add-ons interoperability across brands.
Too true... I mean, there isn't even a standard for Android-compatible wired headset microphones and remote transport controls. Even within the same brand (Sony would use a different value of resistor in the headset between one generation of Xperia and another - and this is just the one I know of because I researched it). Meanwhile, every supermarket in the land stocks a choice of headphones with mic and transport controls that will work with all but the newest iPhone.
This lack of full headphone interoperability doesn't help Android brands steal customers from each other, but if they did knock their heads together they would erode one reason some people go with Apple.
Ironically for a 'closed' system, iDevices have always been well supported by third party peripheral vendors, from Sennhieser to Logitech - chiefly because they can be confident that Apple will sell X million units of a certain model for a couple of years. If Apple made iPhones with a similar module connector to Moto's, there would likely be more modules available than the few that Moto currently offers.
On that note, Moto's website says they have set aside $1 million to help people develop new modules, with the most promising developers winning a trip to Chicago. I wouldn't sniff at that, but can't help thinking I'd rather go somewhere warmer!
[ The only brand-specific 'module' I have ever bought for a phone - ignoring cases - is a stereo microphone for my Xperia Z3 Compact, using Sony's 3.5mm TRRRS port. It was made for the Z2, and wasn't recognised by name by the Z3C's software, though it did work. Now that my Z3C is awaiting anew screen that it probably will never receive, I've lent the microphone to friend indefinitely. ]