Some of these guys are listing 25000 shards on the broker and trying to sell them in stacks of 5000 each. I think the market itself will drive RMT out of shard farming. It is a business for them. If they need to farm/bot for 5 hours to get 5000 shards and only sell those 5000 shards for a total of 50k (since some shards are down to 10gil each), they will likely move on to something more profitable. It is about gil/hour and in turn dollars/hour.