Try this on for size. I totally made it up (today), and it isn’t provable at all, but it’s fun anyway.
The ?? ???? we say after the ???? ?????’s reads:
??? ???? ???????… ??? ???? ?? ?? ????
????? ???…. ??? ???????? ??? ?????? ??????, ???
????? ????? ??????, ??? ??????? ?? ????? ???? ??????
???????, ??? ??????? ????? ??????. ??? ?? ??????? ??????
????? ??????, ????? ???? ???
So you’ll notice all the things on the list are communal contributions and services. Like building shuls, and inviting guests and feeding poor.
So why does it also mention the people who come to daven in the shuls?
So I’m making up from my boich, a cute joke (this is not torah; it is not sourced). I think that coming to shul is a community service. The reason is the people who always come and make the minyan may be coming because they like to daven with a minyan and you don’t care–but they are doing a service for you. You want there to be a minyan when you need it, like if you have yartzeit, or occasionally want to come. And there is only a minyan because we shlep out to shul every day. It is a community service.