

Because languages change over time and every once in a while someone comes along who insists they can “fix” the language by making a bunch of changes. They are probably right and the changes, if widely adopted, will probably make the language more sensible. However, since one of the common features of a living language is that it changes over time due to usage, oddities will start creeping back in. And the whole thing will need to start all over again.
No, a game should be what the devs decide to make. That said, it can cut off a part of the market. I’m another one of those folks who tends to avoid PvPvE games, without a dedicated PvE only side. This weekend’s Arc Raiders playtest was a good example. I read through the description on Steam and just decided, “na, I have better things to do with my time.” Unfortunately, those sorts of games tend to have a problem with griefers running about directly trying to ruin other peoples’ enjoyment. I’ll freely admit that I will never be as good as someone who is willing to put the hours into gear grinding, practice and map memorization in such a game. I just don’t enjoy that and that means I will always be at a severe disadvantage. So, why sped my time and money on such a game?
This can lead to problem for such games, unless they have a very large player base. The Dark Souls series was a good example, which has the in-built forced PvP system, though you can kinda avoid it for solo play. And it still has a large player base. But, I’d also point out some of the the controversy around the Seamless Co-op mod for Elden Ring. When it released, the PvP players were howling from the walls about how long it made invasion queues. Since Seamless Co-op meant that the players using it were removed from the official servers, the number of easy targets to invade went way, way down. It seemed like a lot of folks like to have co-op, without the risks of invasion.
As a longer answer to this, let me recommend two videos from Extra Credits:
These videos provide a way to think about players and how they interact with games and each other.