Are you talking about Bitcoin's scarcity when Bitcoin is fully exploited? Since then, the value of Bitcoin will be increased due to the law of supply and demand of the market? I do not think so. The first worldwide use of Bitcoins must be made by the governments of the rest of the world. However, this is very much dependent on the country manager. They have the right and the right to decide whether Bitcoin is lawful in their country. Then comes the other causes. With Bitcoin Maximum cap, it can not be asserted that Bitcoin will be used around the world.