It is said that history repeats itself...

History never repeats itself.
Men merely carry out actions that were done in past, and when they see the results of their actions that say history has repeated itself.

This won't be the first time that the powers that be, will attempt to kill a promising technology that's a threat to them.

Like all other times these attempts will fail. The mega corporations should spend their time investing in the blockchain.

It's more profitable to adapt to, than fight a new technology.