I've seen some signs that adding third places can increase the value of property in a neighborhood.
It would be interesting to compare the results of homegrown third places - like the outdoor neighborhood-run cafe in Springfield, MA which was featured in an article a while ago - to Starbucks or Panera.
There's sometimes a misconception that all of the signs of gentrification are disadvantages. But I'd say that having resources like this can be an asset to the community.
Different types of cafes and community centers will have varying effects on the neighborhood.