I think most people are betting on that at this point.
The longer it escalates the more likely that becomes. Since the Palestinians aren’t a sovereign nation it technically isn’t a war and the rest of the world isn’t coming running to broker a peace accord (yet).
Just like Hamas tried to keep things below a certain threshold, so to will Israel do so (and better than Hamas did) when they enter Gaza, so that it doesn’t escalate beyond “the territories” to a conflict with the nations sponsoring the terror.