You over estimate the importance of computers. Computers primarily resulted in editable documents, and provides for faster less error prone and more precise computation. It meant these thing now take less manpower and are less costly. Not so much else.

Internet and telecom. This is separate. Communiction has gotten faster and cheaper. The mail service less used and less reliable though express services like Fedex faster. Frankly these changes are a mixed bag.

Do not forget too that compuserve, bullitin boards, usenet, and forums go much further back then most people think. Think 80s and some sruff before that. Computers go further back. I used them in the 70s and my dad in the 60s though the costs were a lot higher. Electronic computers go back to the 40s and before that there were mechanical computers and relay logic too.