You don't allow your users to own the product you are selling, and keep it hostage indefinitely unless they pay up? What if I don't have a stable income and do this as a hobby?
I was a longtime user of Construct 2 and liked that quite a lot, but having switched machines I wanted to try Construct 3. I've found I'm really not interested in paying several hundred dollars for software that I only intermittently use.
This practice, I feel, violates basic consumer rights.