Does Discontinuing subscription means my rise course source files will be LOST?

This is the main reason I advise any serious elearning developer or organization to stay far away from Articulate Rise. With no option to download or import your source/authoring files, your authoring files are essentially held hostage by Articulate, requiring you to have an Articulate 360 subscription in perpetuity if you ever need to go back and edit your courses. And guess what? Most courses need to be revised or edited at some point.

This system is a great way for Articulate to trap its users into a never-ending (overpriced) subscription, but it is a terrible deal for any course developer or organization. If you want to actually have ownership over the course authoring files you spend so much time working on, go with an open-source solution like H5P.