What are your thoughts on claims that the Ethereum network isn't sustainable and that it's smart contracts will be overtaken by networks like the Tron Network, Cardano, EOS? Surely Ethereum 2.0 should help?
None of those you have mentioned can compete favourably with ethereum, except there is more development on them. I am also sure that if the Ethereum 2.0 is eventually lunched, that will be a great achievement that might be hard to overthrown.