Even within GoPro's demographic of sports, everyone who wants one probably already has one, more or less. Upgrading is now less of a concern with 4K. I bought one for skydiving and I can't see myself upgrading if they came out with a newer version (even if I use mine for every jump). Everyone pretty much has one or a few GoPros at the dropzone's I've been to, and it's great for that kind of stuff. But if I were to upgrade, I would move to a DSLR for better quality and more control - not another GoPro.
They'd need to considerably improve the quality and features if they want people to continue upgrading.
They'd need to considerably improve the quality and features if they want people to continue upgrading.