I see no problems for VR in the short term, but I see big consequences further down the line.
internal conference at facebook
"...we're clearly not a hardware company. We're not gonna try and make a profit off the devices long term. We view this as a software and services thing, where if we can make it so that this becomes a network where people can be communicating, and buying things and virtual goods, there might be advertising in the world but we need to figure that out down the line, then that's probably where the business will come from if I have to say."
tl;dl Facebook doesn't really know what they're going to do with oculus at this point (not unusual for facebook at this point), but they clearly want to own a piece of the VR pie when head-wearables become a thing.
This won't affect oculus short-term, but chances are they aren't going to continue the hardware focus once everything is fleshed out a few years down the line.
My predictions for the future are either an ad-supported platform(which oculus considered in the past), or an ARM-esque licensing of technology out to other manufacturers, to counter say, google.
In other words, I see this as net-positive for short-term VR development, but progressively bad in the long term. Facebook wants to be the flagship of VR so that they can collect information and put ads on it, not because they want to become a Sony. This is no different from Google's strategy of buying startups which seem promising as a data-collection/ad platform.
To take youtube as an analogy, Google gradually improved the service to a point where nothing was comparable, at which point they started integrating other Google products and services, to the point where youtube has only gotten worse since 2011. I see this as the path for the rift, specifically.
VR went from being a grass-roots movement into the next iteration of big business in the space of a week, which is kind of disheartening. Of all people, I'm actually rooting for Sony at this point, because at least they will want to make the best product possible, consistently, far into the future.