Predictions: will Ethereum maintain market share or will it lose out to Ethereum killers?

Platforms such as Solana, Avalanche, Polygon, Fantom etc. allow for faster, cheaper transactions and less electricity consumption, but Ethereum is due to upgrade to Ethereum 2.0 in the near future and L2 apps are growing.

What are your predictions? Will Ethereum maintain dominance over the defi space, or will other platforms start to take over? What will be the dominant platform in the defi space in 3/6/12 months time?