Robo Bees?

It seems that many groups are working to develop robo bees with a view to these being used to assist actual bees with pollination duties (https://www.livescience.com/57827-robot-bees-could-aid-pollination.html). Although this is a very interesting technical development, I suspect that it will not produce major changes on the planet as a) these drones are much more expensive than the real thing; b) they would find it difficult to operate outside monocultured crops and c) they presumably wouldn't be available for pollination duties in most of the natural world.