It totally depends on the area.
I have no idea what a franchisee makes, the Caffe Nero where I live and even the Costa in the next town, they always seem to be busy.
Where I live it's fairly middle class and there must be, ooh... at least 8 coffee shops, but some are a mixture of greasy spoon, others more continental and one American diner. We have a Caffe Nero which does well and we did have a Costa, it always looked a bit grubby though, compared to the others and it was no surprise when it closed down and didn't reopen.
Where the local farmers market was, there was a small cafe/bar, but this was away from the high street and got less business and I don't think the owner was that bothered about it.
There is one chain (Brown and Green) who started out in the local pub, then went to have 8 more locations, locally, including one on the platform of the local station. They've also branched out into doing wedding functions. Was started by twins and their DH's. They appear to have worked bloody hard so well donem to them.
There's another chain (Blackbird Bakery) who are a bakery/cafe who have 10 locations in similar areas, and are, I guess their local competitors.
I know the owners of another local coffee shop (does lunch) called La Bruschetta, very nice, they're also open til 6pm which is very handy if you fancy popping there after work.
What's interesting about all of these is the owners and staff are always very friendly and helpful.
At the station where Brown and Green started out, before they moved in, there was a station cafe, the most miserable woman used to run it, barely smiling. I got tea and coffee there because I wanted it, but sometimes begrudged using it.
Depending on the coffee shop you mean, there's a small one in another local park, I mean it's more a park cafe, I go there if I'm in the area but it's not brilliant. It isn't really a coffee shop though.