Recently I have come to assume that any call to my landline is from a telemarketer or an automated call from Terminex letting me know that our regularly scheduled pest-extermination service will occur on its regular schedule. So I usually ignore my home phone.
Not since the steam engine has any invention disrupted business models like the Internet. Whole industries including music distribution yellow-pages directories landline telephones and fax machines have been radically reordered by the digital revolution.
There are signs that the age of petroleum has passed its zenith. Adjusted for inflation a barrel of crude oil now sells for three times its long-run average. The large western oil companies which cartellised the industry for much of the 20th century are now selling more oil than they find and are thus in the throes of liquidation.