Awesome and inspiring story.

I personally can't see paying a subscription for an exercise machine though. Why can't I just buy something and own it without needing to provide recurring monthly revenue to the company who sold me the thing? Rowing is boring, but I solved that for myself with a pair of headphones and a podcast. I have a hard time imagining rowing based games being as interesting (though I did like the concept of your pros versus Joe's).

All said, obviously people do pay subscriptions for stuff like this so best of luck to you and congratulations on your success!