I did retain all the rights, but other companies published it under their branding. I ended up getting somewhere between 20-30% all up. I'm not rich, I still have to work for a living. They burnt through all the revenue. The main company that was publishing it moved to San Francisco, hired offices and staff, and burnt through all the capital almost instantly. I just banked mine and used it for travel (for a decade).

oh, and I dont really have any idea how quickly the revenue will decline. I'm surprised it's still making some money now actually. The market may take another decade to completely dry up though. The data recovery stuff does work on digital cameras / SD cards, external hard disks, USB sticks, etc. I'm not sure what people currently buy it for generally.