Its all about money and development team size. A is generally indie, AA is a small-medium teams, AAA is large teams. AAAA is marketing terminology because everyone thought that AAA just meant better.
Its more than just the hardware, many don’t want to put any time into the software either. I’ve tried to get one friend to use the gaming PC he already has and he just flat out refuses. He finds it “breaks too often and has too many issues” which idk I’ve never had that level of issues but I’ve also been using them my entire life lol.
I think you underestimate how many people don’t want to deal with the overhead of a PC vs a console. Like for you and me, it’s straight forward and simple to use a PC but I have friends who truly struggle with technology and its just easier for them to not have to deal with anything beyond their boxed in OS on their console.
It will likely be a Greek or Roman name in keeping with tradition. The IAU generally let’s the person/group that discovers have an influence in the decision but they’re the final say on the name.