This is what people did before web apps. Package a binary and ship it to customers.

Problems with the approach: * Customers still ask you why stuff doesn't work, except now it's their hardware * Observability is not as strong on self-hosted solutions * There is no true universal binary, so no matter what you have to put constraints up (only runs on windows, mac, etc.) * Updates are way harder

Browsers are built to browse the web, trying to remove the web out of browser apps seems illogical