Handheld gaming PCs have gradually inched toward the mainstream over the past few years. Yes, portable PCs are still relatively niche, but there are signs of more widespread interest and adoption in the near future. The success of Valve's Linux-powered Steam Deck, of course, is the prime example of this. On the Windows front, Asus, a major player in the PC hardware market, recently dipped its toes into the portable PC scene with the ROG Ally. Influential manufacturer support is key in...