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Can you name a single compelling use case for Ethereum, Polkadot or Cardano?

• bouncycastle 6y ago
  For Ethereum, Defi.(Decentralized finance). Basically crypto based financial services run on smart contracts as Decentralized Autonomous Organizations (DAOs). Services include lending and borrowing, decentralized exchange, insurance, stablecoins, derivatives, portfolio management and more. MakerDao, Uniswap, Compound Finance, Yearn Finance, just to name a few. It's only just starting to take off, see more metrics here https://defipulse.com/ https://defipulse.com/ Another area taking off on Ethereum right now are "Non Fungible Tokens". Basically digital art trading on crypto.
• RhodoGSA 6y ago
  Think of everything you do, but under one roof. I pay subscriptions, bank, get paid internationally, consume on the internet without selling my data, manage my stocks. Theoretically, this is all possible within the polkadot ecosystem. I have complete animosity across my transactions. I can browse the different smart contracts across the various parachains. I can transact online without worrying that due to my past purchase history that it's going to charge me more such as Airbnb and other flight aggregators. I can cancel my subscriptions by not no longer executing the contract instead of going through GUI's designed to be hard to cancel. I can get paid internationally without extremely high fees. I can buy synthetic stocks, other coins, use Yield farming, or just stake my polkadot to earn 14% more DOT a year. Fiat money is automatically -2% a year. Exchange it seemlessly into bitcoin to buy a Tesla.