Let's mandate an inferior standard and kill a superior standard so everyone can be the same on paper.
If you bothered to ask iPhone owners, you would find three things:
1. They enjoyed the same 30-pin connector for nearly a decade (a decade!) while other handset makers changed their connector and chargers for every new handset. They will likely enjoy the clearly superior Lightning connector for another decade.
2. They have no beef with their connector, or the cable - it works really well.
3. They don't care what Android is using or dream of having a compatible connector because they don't have an Android handset.
It's uniformity for the sake of a pencil pusher's concept of uniformity - not for consumers.