Apple does not have exclusive rights to the "I" labeling. Multiple companies came out with different branding during the Internet bubble to cash in on the craze.
Check out:
www.ivillage.comThe Amex has I-Shares trading on various securities.
www.amex.com (check under the Exchange Traded Funds)
There are others that have come and gone while some still remain. Apple may be the most successful with the "I" label but that does not mean that anyone else can't use it.