Steem is second on the list of China's public blockchain ratings, presumably because it has the most number of blockchain transactions and has proven to have longevity and a clear use-case.

Because of the ubiquity of the internet which connects us, and the arbitrary nature of "value" itself, no-one can stop cryptocurrency. From tulip bulbs to sea shells or excess solar power from my roof panels, crypto offers the potential for a true barter economy, so long as we have something of value to trade besides our time and labour. If our governments could switch from punitive control freak mentality to a more enlightened vision of a collective society framework, I think a UBI could be effectively administered via a blockchain system, and humanity as a whole would benefit. Repetitive mundane tasks can be carried out by technological advancements from drones that fill potholes to robo-banktellers.

There would still, no doubt, be pirates and criminals, but the blockchain could keep a tab on this, too. I suppose there will always be good agents and bad agents and safeguards need to be built into the system.

Who controls it? Well, if only it could be completely decentralised...based on the smart contracts idea and left to its own devices.

https://www.popsci.com.au/tech/cars/a-3dprinting-roving-robot-could-repair-potholes,413676

http://news.morningstar.com/all/access-wire/ASWAccesswire500069MSN/the-global-public-blockchain-technology-assessment-index-just-released-ethereum-claims-the-top-spot.aspx