Exactly. The ONLY decent GSync monitor is the Swift and that one is plagued by a ridiculous high price (32" 4K IPS BenQ is $999!), it has major quality control issues (gamers reporting that they are on their 2nd-4th model due to overheating or dead pixels, color accuracy/color shift issues after some months of ownership as confirmed by European reviewers and some gamers) and its supply is very problematic. Thus, despite GSync being great on paper, in practice as a mainstream solution for gamers it really isn't taking off and the options/adoption by LCD monitor manufacturers is terrible for it.
Samsung is one of the major sellers of LCDs. If AMD gets Dell, Acer, ASUS and LG onboard for FreeSync, then GSync will suddenly be way behind in adoption. Considering that ALL of Samsung's 4K monitors starting in 2015 will support FreeSync, that means it's just a matter of time before other major manufacturers jump onboard as they will be unlikely to allow only Samsung to have this competitive feature advantage.
Finally, if GSync doesn't make it to high end 4K-5K IPS/VA panels long-term, it will face major adoption issues for premium PC gaming.