> Remember that in some cases people don't have the source code for programs, or the tools that could build it. Microsoft preserves that. And even if they fail

> Remember that in some cases people don't have the source code for programs, or the tools that could build it. Microsoft preserves that. And even if they failed to preserve the source code or the toolchain for whatever reason, they go to extreme lengths to get fixes in: https://blog.0patch.com/2017/11/did-microsoft-just-manually-patch-their.html https://blog.0patch.com/2017/11/did-microsoft-just-manually-...