Every time I hear about an agent escaping it's sandbox, I just think it must not have been much of a sandbox. Like how hard are they really trying to contain i

Every time I hear about an agent escaping it's sandbox, I just think it must not have been much of a sandbox. Like how hard are they really trying to contain it? Is it just a container host with unpatched flaws, or is it a container, nested in a VM, behind a firewall with no ports open in an air gapped environment? I think they'd prefer it can get out so they can announce it and hype their stock.