Yes, there are so may photography communities! Mostly just 6 that are very active. Three of them are more specific. So many are pretty inactive. I think the difference comes in with the amount effort and persistence the founder puts in. A lot of people give up when things don't take off straight away. It can be slow enough going, even when there is no competion.
You've got a challenge ahead of you and I wish you the best. I'm going to have to knuckle down and look into financial myself soon.
Thank you :)