Yes, it does happen, but the device manufacturers (for the most part) don&#x27;t exactly go out of their way to make it easy. And other than Android forks, there aren&#x27;t exactly a ton of choices.  It&#x27;s a pretty sad situation in many ways.<p>Of course, I recognize that <i>most</i> people aren&#x27;t going to want to install a different OS anyway. And that&#x27;s OK.  Most people didn&#x27;t install a new OS on their PC&#x27;s either.  But <i>some</i> do, and <i>some</i> want to tinker, create, invent, hack, and innovate.  And if we slip into a world where that&#x27;s not possible, or where it&#x27;s incredibly difficult, I posit that that is a bad situation for everybody (except, I suppose, Google, Samsung, Apple, etc. stockholders).