You can't ship your code to a hosted sandbox.
Your work touches production data, regulated workloads, or proprietary tooling. The hosted-sandbox vendors all begin with "upload your project to our infrastructure" — and that's exactly the constraint your team can't accept. e2b is impressive engineering. So is Modal. So is Daytona's hosted plane. None of them run on your hardware, in your network, with your security team's sign-off.
Meanwhile, the autonomous-agent narrative has shifted from "execute untrusted code safely" (the 2024 question) to "operate persistent autonomous processes for hours at a time" (the 2026 question). The substrate question is settled — microVMs work, containers work, virtiofs works. Trust and operations are the new battlegrounds, and the open self-hostable side of that battleground is where AIWG's optional isolation runtime lives.