I suspect there's a movement behind the scenes which is considering using the territories as bargaining chips.
Russia's cease fire suggestion is to receive what they've currently conquered, an agreement for Ukraine to not join NATO (or even EU later), and rearm for a new attack.
The powers that be would use some territory as a concession to give away, then fast track Ukraine to NATO.
Well, the industries want to prolong the situation and nobody wants to dip their toes into dismantling Russia, it seems to be their domestic issue. Russia is pushing a war economy hard which is never sustainable, but then again waiting has its price in lifes. If there's an option to prevent further escalation from Russia during some temporary ceasefire, there's probably someone considering it.