Monopoly

They are people who refuse to buy certain products because the company involved is a monopoly. The situation is so complicated that the companies themselves diversify so much to make it hard for the consumer to start a hate campaign against a monopoly. The investment gurus recommend the investors to diversify and looks like some companies have been following it rigorously. Checkout the list of products that CocaCola Corporation owns. Investors can probably declare CocaCola as a mutual fund.

http://en.wikipedia.org/wiki/List_of_Coca-Cola_brands