So rather than free market capitalism where AWS would have actually lowered prices after investing heavily in a new datacenter-focused line of Huawei GPUs, the US government took steps to stop capitalism and competition, gave NVIDIA lots of free money (USA! USA!) and now prices are going up.
Recall pictures of Bezos smiling at various Trump events.
Everything Trump admin has done so far with tech reduces competition and tries to pick winners. This price increase is just the beginning.