Bright Side of News claims it's not only Gainward that is considering to dump ATI, parent company Palit is reportedly extremely unsatisfied with the way how AMD treats them. The rumor is that AMD is trying to protect vendors such as Sapphire and PowerColor, and doesn't allow others that don't belong to the select few to build custom Radeon graphics cards.
The reason why AMD allegedly did not sell 4770/4890 chips to Gainward was the Radeon 4850 card with GDDR5 memory. Partners did not like what Gainward did, ATI requested that Gainward stops advertising and selling the 4850 GDDR5 card. Gainward refused to do so. This was followed by the lack of 4850 chips for Palit, and the "punishment" was the lack of any 4770/4890 allocation.
In the future, Gainward and the whole Palit group plan to position their retail strategy on custom-build PCBs, with a straight policy of releasing a top-notch, no-cost-saving PCB for the high end model and optimizing for "higher-end" and "affordable price points".