It's a monopoly to the users, when a source of crucial information (say, a politicians' declaration) is only made available on Youtube. It may not be to the ma

It's a monopoly to the users, when a source of crucial information (say, a politicians' declaration) is only made available on Youtube. It may not be to the market, because the politicians could have hosted that declaration video elsewhere but that's not the users' concern. They could ask owners to post their videos elsewhere, but that's not the users' choice.