Law of conformity is the term that business people use. Marketers are aware of this, and when you see ad campaigns, the masses notice how they are done. Knowing this rule will save you a lot of money if you want to be good at business or start a business. People conform to the whims of others, hence why you always make one sale by doing things in a group. You only need to appeal to one person to convince others. If you look back in history at people like card sharks or magicians, they always use someone that knows the game, which then convinces others of the magic. Influence is significant.
