You are suggesting that the entemology of the word fixes the meaning of the word forever. Whereas the word itself can change meaning as time passes.
Those things we carry around were called phones, because they were invented to make phone calls. They evolved into so much more, but the thing you carry around is still called a phone.
Jobs introduced it as 3 devices in one, a phone, a music player, and an internet browser. Should he have called it iBrowse or iMusic?
This morphing of meaning is part of language - Facebook is not a book, and is mostly not face's. Should it me called something else?