Earlier quoted context omitted.
Wouldn't it prevent people interested in creating an ISP in any area that has "free" facebooknet? Especially if the services provided by facebooknet is most of which people would want with an ISP anyway? So not only does it prevent competitor websites, but it stops competitive ISPs, too. It's especially bad if this coporate network is censoring information. No opportunity to even discover non-filtered information out…
Are those competitive ISPs going to give the audience we're talking about access to the net for free as well? Because for a lot of people in this world, they will never be connected to the net unless they don't have to pay; they simply can't afford it.
This is only an intentional effort to control and shut out competition (e.g. future Facebook competitors) and has the risk of killing local ISPs as a by-product.
tl;dr It only serves Facebook. Wikipedia et al. are just thrown into the mix to make it look like a humanitarian effort.