In your business life, you encounter several types of enemies.
There are competitors, who are fighting for the same customers you’re going after, coming up against you in deals, telling those customers all about your weaknesses, and doing their best to “position” themselves against you.
There are bosses or other people in power (such as investors) who have decided they don’t like you, and will do what they can to replace you with one of their people.
There are employees who continue to work for you but who don’t enjoy doing so. They make sure everyone (except you) knows why.
There are bureaucrats who, for their own seemingly nonsensical reasons, take actions that could put you out of business.
And yes, there are even customers who have decided that you are doing a terrible job and take it upon themselves to give you a black eye out in the marketplace.