Seems foolish to change. Unlike every other app Adobe offers, LR is also a library. Renting access to your own assets is categorically different from renting access to software which is already somebody else's IP and is also getting (more or less) continually updated.

Letting people buy LR makes them feel comfortable about never losing access to their own raw material. The savvy approach is to let them have this much, charge them to do interesting things with it, and let them keep the final output in a place that remains entirely theirs.