Where I live, bike share is taking off. But I don't see a significant decrease in folding bike sales anytime soon.

Bike share is great if you're in a major city, but if you want to travel outside a major city, you're going to need your own bike. Plus bike share bikes tend to be one-size-fits-all, which for many folks (myself included) just doesn't work. I need a bike that is sized to my frame, is relatively lightweight and has the gearing and features I want. No way can bike share bikes approach that.