I have a tiny php library for a somewhat popular framework. It was made so a company could protect a very old database and certain tables. It started as a one off 9 years ago. It was one php file of less than 50 lines.

As of this month it has been downloaded 2 million times. I still can't believe its been used this much. And I'm the only maintainer. If I wanted to I could ruin a lot of peoples days. But I won't.

In a couple of decades, we are going to have large swaths of code that will outlive its creators being used on essential infrastructure.