Running bamboo is notoriously fast spreading and difficult to remove. What keeps its population balanced in the wild, and prevents it from crowding out the competition? I tried googling, but was inundated with gardening advice, horror stories, and assault / offensive gardening (some of the latter two presumably covering the same incident from both sides). My google-fu failed, I couldn’t really find any info about natural population controls of running bamboo in the thicket of tall tales and gardening advice.
Palm trees are monocots and are therefore related to grasses, however they are not grasses themselves. Monocots are a really broad group though. Kinda like saying a certain animal is a mammal. Important distinction but still very broad.