Another good experience here with a very unacademic, play-based nursery (daycare in your terminology). TBH I think playing with agemates is to some extent a skill that can be learned and is worth learning - I mean, it isn't necessarily obvious to them which of their interests are likely to be shared and what kind of playing is likely to be fun with agemates, and if they pick the wrong thing, they may have a frustrating experience, but that doesn't mean they can't find shared enjoyment, maybe with some adult help to get going.