If Gamespot's policies are anything like CNET's I think they mandate returning review hardware.
They return them - eventually. Bakalar was boasting about his home rig "testing" SLI 980tis and a G Sync monitor. You have to see how they perform long term, over say a year GB still use their Rift, Vive and the reference PC that came with the Rift for VR coverage.
I am not saying there is anything untoward. Unlike Tested and their yard sale or journos selling their press copies on ebay.