Z:gnu-www-ja-network-services-arent-free-or-nonfree--b3bb4d-However, most services' princi/en

However, most services' principal functions are communicating or publishing information; they are nothing like running any program yourself, so they are not SaaSS. They could not be replaced by your copy of a program, either; a program running in your own computers, used solely by you, is not enough by itself to communicate with other people.