They are proper nouns. There is basically one Internet (in common speech) and one WWW. Other internets are not the Internet. (My spell checker doesn't recognize "internets".)
What's next: "you are" will formally become "u r" bc ppl r 2 lazy 2 type?
Languages evolve, but I don't think that misuses should be formalized as correct. It's already hard enough for speakers of some languages to understand English's capitalization system. I think that adding more exceptions makes learning the language more difficult to learn.
People frequently spell "I" with a lowercase letter, so why formally approve lowercase for "internet" but not for "i"?
What's next: "you are" will formally become "u r" bc ppl r 2 lazy 2 type?