You could have other languages that compile code into EVM-executable opcodes, but Solidity is currently the language used by all major players in the Ethereum e

You could have other languages that compile code into EVM-executable opcodes, but Solidity is currently the language used by all major players in the Ethereum ecosystem for writing smart contracts. Although there's other options (or new options could be made), it's very unlikely that Solidity will be replaced by any of them any time soon.