The Inc has been pulled for quality issues not parts shortages. The same crap is going on in EVO land as well. Many defective units and now an OTA update that bricked 100s of phones. HTC has a real problem on there hands with these handsets.
http://androidforums.com/htc-incredible/80366-has-htc-pulled-incredible-flaws.html
http://androidforums.com/htc-incredible/80366-has-htc-pulled-incredible-flaws.html