Yes I am well aware of churches and their tax exempt status and generally don’t agree with it. So I will ask what’s your punchline to my opinion? My point is I am not convinced this is a pure market problem so much as the average consumer no longer wants it. There are still plenty of third spaces to organize events like game nights though not dedicated and that includes community centers or other private entity community centers like churches or clubs. I think the problem is less the market stripped away the third space and more that for better or worse the demand does not exist.
i believe most of the demand for third spaces is for things that are free to use. parks, places to hang out, activities. these spaces are not profitable.
in germany this is handled by supporting youth organizations. sport, scouts and other activities. most of these groups get free access to government owned buildings. they get financial support for their equipment, etc, under the condition that any youth can join with only a nominal membership fee.
in a pure market economy none of these organizations or spaces would survive. they depend on government support.