They now have only one place to get funding, before they could go up to pretty much any investor and get funding. Maybe it wouldn't have lasted if the VR turns

They now have only one place to get funding, before they could go up to pretty much any investor and get funding. Maybe it wouldn't have lasted if the VR turns out not as good as it's hyped to be, but for now I don't see why they need the resources of Facebook. Of course they're readying for a product launch, a product that appears to become popular, so they'll need to invest in production capacity and materials, but is a takeover really necessary and the best way to achieve that?