Are telephone directories(books) becoming obsolete, just like home telephones?

I just dumped phone books that are obsolete. How many times have I searched for a phone number, in the past year, using these books? Exactly zero. Using the internet is much quicker and a lot less bulky that a heavy phonebook. Free 411 is also available on cellphones. And, just think of the money to be saved, if phonebooks were no more!! I realize that not everyone has a computer. Could the phone companies not just take orders for those that require these books, rather than spending a fortune for millions of phonebooks that meet their destiny in the dumpster? Question: Are telephone directories(books) becoming obsolete, just like home telephone landlines?