Did you read the article? It's got a lot of good information on how code runs on the ethereum virtual machine. And the benefits of using something like WASI. Even if you hate block chain, it's still fascinating.
Though the article author omits it, EOS mainnet runs on LLVM and WASM contracts and executes about 1000tx/s today.
A more powerful financial VM is needed e.g. for on-chain order books.
More about use cases vs. databases can be found in my article
https://tokenmarket.net/news/opinion/capital-markets-upcomin...