All those altcoins are scams and ponzis until they create a sustainable economy for their "currency". Bitcoin was once maybe a ponzi scheme in the beginning. But not anymore, thanks to the masses of people who are willing to take payment in Bitcoin, and the services that have employees willing to accept their salaries in Bitcoin.
Plus what innovations? Are they proven to work? I have heard a lot of terrible things about IOTA.
Yes, I don't like IOTA.. But Hashgraph and Nano looking good.
Indeed they need to prove the technic.
What's your basis on why you believe Hashgraph and Nano are "looking good"? The whitepapers? The random promises of their developers?
But can Bitcoin handle this kind of speed in the future?
If Bitcoin's secure, decentralized, censorship resistant and trustless transactions take an average of 10 minutes each to confirm, then I will take that over unproven, might be broken, might be centralized, might be scam cryptocurrencies.