I don’t think this is about saving money, I think it’s about saving the business.

And by the business I don’t mean Facebook as a product that makes social networks is going to cease to exist.

I think the problem is all the valuations in software aren’t just based on growth but hypergrowth. Doing this solves two problems. Leans out the company and places a moonshot bet. If it doesn’t work out you’ve leaned out the company to survive. If it does you keep the hypergrow going.