hashcash
bitmessage
parallelcoin
litecoin
need i say more?
there is probably hundreds of examples of projects that failed to make use of PoW and only one that succeeded
Discussion
What they said in the podcast was like the guy is kind of a psycho (in the good sense), like he had really lots of business ceos wanting to do business with him, even big business like MS, and in the last moment he was always like "no, I don't like you".
I mean, that's also a way to kill adoption 😂