Not brown rice, but I guess there is a shortage and now hoarding of rice happening[1]. India has supposedly banned the export of non-basmati white rice.
I guess this could impact brown rice supplies if people who can't get white rice switch to brown rice.
Not too hard to hoard rice. It doesn't require refrigeration and can be stored for a long time. Like toilet paper!
[1] https://www.thenewsminute.com/article/people-hoarding-bags-r...