Previously when we install an operating system, and a software on a computer, it will just work forever. NASA has explorers running after many years, and softwa

Previously when we install an operating system, and a software on a computer, it will just work forever. NASA has explorers running after many years, and software industry we have to keep upgrading and fix issues, and write new code to do exactly the same thing as before. With subscriptions, I guess you probably need to upgrade hardwares as well as softwares because the new code will automatically kill your old hardwares.