Fanfiction Differences from Pro Fiction

[yourlibrarian]

Earlier this year I mentioned to someone that it's interesting how often fanfic stories have epilogues. I find that in a lot of fiction I read, not the majority perhaps, but close, I often find it ends sooner than I expect, sometimes with plot threads hanging. Not major ones, but still. And while the fanfic ones are generally more about emotional closure than plot details, having the epilogues makes it less likely those threads are waving around.

She found she felt the same, often wanting more closure in published novels. "Like, the plot resolves, but then I want everybody's reactions to the plot-resolution, which we tend not to get"

Have you noticed the same? And what other things do you think fanfiction tends to do differently than published novels?