Speaking from the summit of my immense pile of ignorance on this (as well as other subjects) I'll venture a couple thoughts.
Somehow I wouldn't think it would tend to shrink. Please don't ask me why.
And if some tropical type country can manage to build some sort of a trade and cash engine out of a commodity they are in position to produce, I say, "Go to it!" Especially if the bamboo can be grown with little or no chemicals, etc.