When companies fail (because they're providing a service that not enough people want, or because they provide it too inefficiently), those companies stop using resources, which frees up those resource so that someone else can use them (presumably more efficiently, or to provide something that more people actually want/need).
But when government projects start to fail, the first thing that usually happens is that they get considerably more money to try to make it work, and that goes on for years. And when government programs don't work, or don't do something that enough people need or want, those programs far too often just keep going, for years and even decades, wasting resources that could better be used for something else.
But when government projects start to fail, the first thing that usually happens is that they get considerably more money to try to make it work, and that goes on for years. And when government programs don't work, or don't do something that enough people need or want, those programs far too often just keep going, for years and even decades, wasting resources that could better be used for something else.