Did you not know that Apple bought FingerWorks? Hmm wonder why they did that...
For some reason the touch controller chip is made by Broadcom. But as far as I know, Apple is the only one who buys the chip. It would seem there must have been some exclusive agreement. But I would think it should expire eventually since that's in Broadcom's best interest... they would like to sell such a hot chip to every cell phone mfgr.