Ethereum can lose its position on DeFi market because Tron is a good technical competitor
Don't think it will be. A lot of people still use Eth and great amount of platforms use ethereum blockchain
The ethereus is on major position now, so this will be hard to move it from its place. And I don't see the active competition now
Yes, but we don't talk about today. The crypto market is growing and developing, so we can expect for the new moves in defi