I'm not proposing worker coops. I'm proposing consumer coops.
Government equity ownership means the consumer coop can't just decide to privatise by itself or take on debt secured by equity.
The model I'm proposing is how most public housing works (government raises capital, builds housing which is government owned). Maintenance of that housing/other admin work is handled by housing coops (effectively consumer coops).
Sure, worker coops can be preferred while giving contracts (like an architecture worker coop, landscaping worker coop and so on). But the operations of the crown corp itself are conducted by a consumer coop.