Transfer Rise source files to someone without an Articulate licence

I will shortly be leaving my current company.  When I leave there will be no one with an active Articulate subscription.  I have authored multiple courses in Rise.  Is there any way that I can save down the Rise source files, or transfer them to someone that doesn't have a licence, so that in the future, if a new licence is purchased, they can access the courses at that time (so they can edit them)? 

I have read through some other threads and it doesn't look hopeful, but they were quite old, so I'm hoping something has changed!

Thanks