Part of me thinks "but why build a monster tube amp?" but having owned three ARC amps of various power ratings there is something about ARC's circuit designs where more power sounds better regardless of the room and speaker.
But then, the more power tubes you have the higher the cost of use, the more heat generated in your room, and the more likelihood of a power tube failing or not being within bias range.
All in all, unless you have a large room and demanding speakers, I would opt out but that is just me. I saw a CyberTruck for the first time today. Why would any sane person buy one? To be noticed imho.
I am a former bike racer and continue to ride and love bicycles now that I am 64. You can go with tubes (inner tubes), tubulars, and tubeless (which uses sealant). All have advantages and disadvantages. You can go with super light custom steel, super light stock carbon, or custom/stock titanium, All have advantages and disadvantages. And so it with all in audio, including power amps.
But then we come back to my first sentence. I stand by it. Powerful ARC amps are special.