I'm getting heavy flashbacks to Active Desktop and iirc "Active Channels".
Does anyone remember those? Web feeds on/in your desktop. I believe it coincided with the release of IE 4 and their big web integration push.
My introduction to containers was HP-UX Vaults.
same as virtual machines were a thing in the early 70s and client-server in the 80s, but not for the target market despite the industry thought so for some time
But there wouldn't have been the hardware, resources, or depth of support available for the end user in the 2000s. There are still non-technical folks I deal w/ at work that don't get what a VM is...