Exactly. As Ron Dennis alluded to over the weekend, you need cars on the track. He was talking about the independent teams (and FI, (or what will soon be the McLaren B team, with strong rumours of FI getting Merc engines and a McLaren chassis) in particular), but the point stands.
It's a tricky situation though. The main cost in engines isn't in the manufacturing or running of them, but in the design and development, even during these freeze periods. That will never change. So having 2 engines per season isn't going to make a massive difference to the budgets, and for those teams who are spending zillions and end up cutting back a bit in the engine department, it will just be spent elsewhere.
Then again, there's little doubt that the manufacturers are going to be suffering massively if this economic problem is a mid-long term issue. I'm not financially minded at all, and all other things being equal I've little doubt that disposing of an F1 team would make little more than microscopic change in their turnover, but it could make one hell of a difference to their stock holders, so is there more to gain through ditching an F1 team (in Honda's case a vastly overfunded and underperforming one)?
It may make little difference to the likes of Ferrari, as their client base is rather different to Joe Public, so I'm sure they'll be happy whatever the situation, whether the sport stays relatively similar or they inevitably end up supplying the stock customer engines.
I'm not in favour of this one tiny, little bit, but it goes far beyond what Max said a few days back. F1 needs to cut back on its budgets massively.