So it's a different set of tools / skills? Isn't the whole point of the tools/skills that you can use them on-demand? i.e. having them available doesn't make anything worse does it? Why did it even need to be a separate thing? So this seems more like a branding thing to me? Oh if you want to do serious work you need the paid subscription!
You can wire such things up to an agent yourself in a bunch of alternative ways if you like - run OpenClaw, Hermes, or leave a computer running somewhere with Codex Remote.
For a lot of people though the Work that comes with their existing paid ChatGPT subscription is a more convenient option... if they can figure out what Work does and how to use it.