The Internet (and the Internet Protocol) is used for everything, including building cars, brewing beer, making drugs, moving funds, cctv, building security, controlling UAVs and cars, etc.

Very few cared when Telegraph cable was torn and took weeks to repair. Now if the Internet Protocol is unavailable - the whole enterprise is paralyzed [0].

[0] http://www.mercurynews.com/2016/08/01/southwest-pilots-want-...