Performance base data is supplied by the OEM, however there are third party companies that do offer runway performance. But nowadays it is usually cheaper to use the OEM data via their software tools, all you need to do is buy an aircraft, get a service contract and you get it "for free". Well, if you consider buying a 70 million dollar aircraft and paying a couple hundred thousand a year for free.
The problem with making those charts freely available is that not all carriers use best industry practices, there are some very dodgy outfits out there that wouldn't shy away from using free information instead of paying for it. By the way, the iOS software from airbus is completely free of charge available on the app store. You just won't have any of the required data, for that you need to buy the aircraft first.