This is an interesting take on licences that turn 'abandon-ware' in to public domain or close to public domain code when the maintainers are unresponsive.

I like how it mandates that there are 3 years for innovation to occur within. However I feel like the license before that needs provisions for things like the ability to make local changes as needed, and also to publish /security patches/ freely.

Edit (Beneath):

The impression I got was that he has ONE version, and a built in escape clause for anyone using it. I took the view of this licensing scheme ensuring he'd have to 'compete' against a 3 year old version of the product with compelling features; not that there'd be an intended 'free' version of the product.