I have no doubt the crypto market will be that big or bigger but whether it's BTC or ETH or STEEM or coins we've not heard of. That's the question. Cryptos bring banking to most of the world. In the west cryptos are not in fact that necessary as we have a robust banking system. But in most of the world people don't have bank accounts - a smart phone and a crypto gives them a bank account. Many countries have governments which will take their money (eg Greece) and Venezuela is on the brink of collapse right now. Inflation is so high there that there are people working full time walking the supermarkets raising prices. So when you take into account the world population the crypto market is huge.

Like with the tech boom - it's working out which are here to stay is the question. I listened to one commentator's video the other day and of the top 5 BTC is number 5. I can't remember 2/3/4. ETH was number 1.

Platforms like STEEM bring intrinsic value which many others don't.