The EVM design choices are tightly bound with the on-chain storage of data. On ethereum you pay for reads (less) and writes (more) but everything is very expensive because it's stored in a merkle tree with computationally expensive operations.

Alot of the WASM experimentation has also included changes around how storage is charged. Specifically NEAR does a deposit system where you have to HODL to store data on chain. That allows them to innovate in the runtime and cost structure and still incentivize blockchain nodes.

So it's not entirely gas accounting for computation, its more pricing for storage that probably keeps eth on EVM indefinitely.

Other experimental chains are must more likely to become robust and trusted and more performant and then eclipse ethereum.