Isn't it possible that people view the karma threshold as a barrier to entry they can take advantage of? What's to stop some organization from making 100 accoun

Isn't it possible that people view the karma threshold as a barrier to entry they can take advantage of? What's to stop some organization from making 100 accounts that accumulate karma and then start engaging in low-signal astroturfing/shilling that is harder to distinguish, especially if others cannot counter them without similarly organizing a group and accumulating karma over time?