alt Hacker NewsThat's because licenses are an abstract complexity tacked on to a simple material reality in order "to promote the progress of science and the useful arts".
Just like many cultural rules, they keep growing in complexity until they reach a phase change where they become ignored because they have become too complicated.
OSS licenses haven't grown in complexity all that much in the past forty or so years. They're being ignored more now because it's become easier to ignore them, not because it's become harder to abide by them.