There are already a number of gay exclusive retirement communities designed specifically to avoid running into a few "hater" types. They tend to be high amenity, well designed places that are EXPENSIVE to get into and on a monthly maintenance basis. Some retirement places develop small cliques that try to enforce conformity on everyone. Here in Tamp area we have Timber pines (8000 residents) and The Villiages (80,000 residents) of Adult Active environments. Demand is there for exclusive, nonthreatening environments to retire in. I believe both places have varieties of living from single family to condo types.
A smaller community could incorporate as a profitable business, hire the residents, and provide health insurance as a perk of employment. Something like, "The Good Fairies of Tampa Bay," Private living, public name branding. Then provide outside services to community, maybe run an on site gay bar / restaraunt, etc. 15/20 units lived in permanently, 10/15 rentals. Winter visitors pay dearly. If you have it close to tampa, farmers markets are very hot, and growing heritage fruits/veges may be profitable. It is far cheaper to provide one swimming pool, one major landscaped area etc. then to have the typical suburban sprawl.
Unfortunately, you noticed that I didn't speak of poor people. That is a nice, noble idea. If I had more than enough for myself, I wouldn't mind donating. I am still in the stage where providing for my wife and myself is of high importance. If helping someone can be worked into the profit making scheme, then fine, but going broke helps no one. I have a background in business ventures (I have an accounting degree as well as one in construction) and know just how easy it is for someone to go broke. I believe that you really have to look at it as a business, know the market, and do the most that you can with what are probably limited resources. Look for highest and best uses.
I haven't even touched what kind of rules to have. What if one resident likes to bring home a half dozen "rough trade" types on Saturday night for a little PARTY? Cars with boom boxes entering and leaving all night? Thanks, but I'll pass. What if someone wants to leave, who can buy their shares? first refusals? It ain't easy, simple, or even agreeable to some to enforce some sort of rules, based on voting or original documents. But rules are what allow us to not have to kill each other. Check out
Cohousing.org for ideas on the issues. It is easy to do crap, hard to do stuff right.
There are diverse communities set up in America that have just people developing a tract of land together with perhaps a community house for weekly get togethers to genuine Socialistic business arraingments. You might check out, also, the history of the Amana corporation or Unida Corp both very successful, socialistic companies (originally) that made their socialist owners rich. I'm not saying that that should be the goal, just that Americans have been brainwashed to believe that such ideas have "never worked." They have, and are now.
Sorry if this is a little bit scatter shot. There is just so much territory that would need to be covered to have any meeting of the minds, let alone everyone agreeing to it. But isn't that often the difference between "hoping, dreams, wouldn't it be nice?" and successful creating a new reality, no matter how small and limited.