Well, games with RPG like elements, like character building, various levels of gear and no opponent matchmaking tend to be poorly performing as PVP games. On other hand games that either match opponents, or give everyone about same level gear tend to work nicely.They work fine when they set out as PvP game, Naval Action, Foxhole is just the recent examples. Tthey are designed around PvP and that's why they're fun.
What's fun in arguing with devs and other players? Pretty little. Dedicated games for dedicated audiences with dedicated gameplay. There are commonalities but not enough to build a entire game on.
Say for example wargames with basic infantry combat. Each one has weapons that can take down other players instantly, nobody has super durable armour and so on. Those kind of games work well for PVP action.