I have this undercooked observation that it is easier to add features to a small game than it is to a bigger one. Especially if it is an impactful one.
With a bigger game you have to think whether the feature isn't OP, if it isn't redundant with another one, whether it makes sense within the lore, if the interface is consistent, if it has enough legs to last for n hours and so on.
For that reason, while we often wish we could make bigger games, bigger isn't always better.