Yeah bummer that Safari and Firefox are blocking any origin file access for security reasons.

when the company owning the DNS records for that origin goes out of business.

Likely not a problem. Local data in OPFS is synced with a remote server for collaboration reasons anyway.

There's also the issue with actually having an executable that can just run without any external dependencies

Assume you target the browser as OS, then it's already possible to have an executable: Run the JS file that renders a UI. Related: We will likely have an app launcher demo soon for https://lix.opral.com/