Objective of internet

It was developed by a company called ARPA which was associated with the US government for Military uses. The original name for the internet as we know now it was ARPANET and it was used by the US Military to communicate resources. I believe that a load of these ex US Military bods then setup the wider internet using a basic UNIX shell to comunicate, FTP etc. It was then devolped by the major software houses of Microsoft, Apple etc and became used commercially.