Idk, it's driving a ton of ad revenue (sponsored businesses and whatnot), why would they nuke it? They also get free boosting from users leaving reviews as well.
It's not as lucrative as search, but I would be very surprised if it's a loss-leader. Surely it's not costing $5+B to run...
In my personal experience it has been getting consistently worse over the last 6 or so years. It used to be nearly perfect but now it is somewhat common that the directions will be wrong or misleading