Bitcoin can never be a commodity, commodities by definition have some sort of industrial utility, and Bitcoin was created to be digital money. So, you are comparing very different things when you ask about Bitcoin being a future of global economy, because it has nothing to do with definition of Bitcoin.

As for the first part of your question, it's very unlikely that Bitcoin will become "the future of the global economy", the adoption rate is extremely slow, and governments can easily reduce adoption if they will feel threatened by Bitcoin. But this doesn't mean that Bitcoin is losing or that it is useless, millions of people find it useful.