I think there is no market for another desktop community software. the competion is huge this days when it comes to dating and community software. but i wish him good luck spend 5-10 years build it and if lucky have something that they others not already added on the software already.
better spend that time create some unique that nobody yet created .
if i was in his shoes...
i regret i was pick something with huge competion 5 years ago...everyone want have a pice of the cake and you get smaller piece every year in this branch...