True. They could close it off to the public at any time and only offer a subscription service.

However, they are probably afraid to do that for fear that they will lose out to competitors. Offering the service for free was the key to their popularity and bringing AI technology into the hands the average users. If they cut that off, someone else will quickly take their place.

I’d guess it’s one of those “make people dependent on our free/cheap product then increase the price later” kind of deal