The question is really good. Its answer is based on a good technological answer the driving force of the blockchain system is based on:
*Driving force of is a method of conforming blockchain sticks.
*Consensus mechanism of blocks is also a driving force for blockchain.
*Inflatin of Bitcoin's price & competing digital currencies also supports blockchain technology.
*The main features of block chain is decentralization, transparency, immutability.
*The transactions and its recorded & mining also support this system.
*the whole transactions, store records, made by users also support it.
*N ow there is also a Indexica's study that shows that developer are introducing a new blockchain payment system