> There are systems that are maintained only in this sense: fixing bugs, and making sure that it can keep running. But I would argue that this is a very small p

> There are systems that are maintained only in this sense: fixing bugs, and making sure that it can keep running. But I would argue that this is a very small part of all software development work being done. Depends on the domain. There are millions of native Android and iOS apps that are only (slightly) updated when Google/Apple forces developers to.