Sure, 5-10 years ago, eveyone had the Nokia charger..... Then came the HTC and BlackBerry - [did you mention BlackBerry?!] with the mini USB.

Some BB models required specific chargers - but ostensibly, HTC-type and BB-type chargers are interchangeable - I know because I field test lots.

THEN Blackberry brought out the 8900, with a 'different' mini USB - it has rounder edges.

There is no bloody way that we will ever see "one size fits all" - we all secretly know this.