Yep, I can’t predict the future and though we definitely have plans, I shouldn’t share too many of them because they’ll inevitably change as we do more research & iteration.
What I can share is: we’re going to open source the runtime so you can run notebooks outside of the web environment. And, re: capitalism, we’ll introduce paid options as soon as we’re done implementing some super cool additional features/specs, and when that happens, please do lend some support! So, yep - export/running-on-your-own is definitely on the roadmap, as is business. For now, sharing and experimenting is the best way to support Observable - it’s already amazing to see what people have come up with!