I have to totally disagree with the premise of trans folks as a whole do not help others. Also lumping LGBT organizations in is also a bit unfair. Especially when more often than not, T is for token. Trans specific support organizations are rare. Most, perhaps all, are geared towards the basics of life and transitioning. A many year long and difficult process.
As SuzifromMD mentioned, there are TG specific organizations in MD, also my current almost home. THere is also the Whitman Walker clinic in DC that all my group members praise for all the help and guidance they provide. Both medical and with the burocracy.
I know in NJ, my home state, there is a network of lawyers helping TGs.
As far as business goes, I believe she is the head of Gender Rights MD, Sharron Brackett, is also a small business owner that hires only trans people.
In my TG group I do not think there is any active member who will not do all they can to help another member. This even extends to the work world with resume and interview skills. Even helping with coping skills like balancing jobs, time and expenses.
I am not a big fan of the term stealth as all emcompassing. I tend to divide full-time fully transitioned TSs into three camps. Deep stealth, stealth, and public. The simple fact is just about all late-transitioners cannot be deep-stealth. Meaning everyone short of immediate family members do not know your history. I put my wife in the deep stealth class having gone full-time in her 20's as well as moving out of state. Back in the 70's-80's that was the best option to preserve your life. Stealth to me means yes I am trans but I just want to go about my life keeping a relatively low profile. Yes, others know but no need to constantly broadcast it. Public are the advocates which vary in intensity. For the most part they are very up-front about being trans.
Any person who is working for a living, trying to keep a family and social life, and paying bills winds up with very little free time for much else. Grown ups lead boring lives. Yet in my TG group many are pro-active. They do outreach to various schools. We have been doing an annual TDOR vigil for about 7 years now? We tend to go to area LGBT public events such as last years rallies for the marriage bill. Though I basically have a very negative cash flow I still gave a donation to a MD PFLAG group which has a totally amazing group involved with it. I am sure I wasn't alone.