Hi @alberto really good to meet you too.
I've just read your post on Place-based social innovation and I think thats what we try to do and that this happens in both a physical and immaterial sense, usually together.
So usually we work with a community and local government to develop cultural infrastructure where there isn't much, this could be a kiln, a drinks company or a block of flats and then we stick around and commission artists to inhabit those spaces and work with the people who live there, then after a period of time we give it over to the people who are most invested to run it themselves as a charity or a business. You can check out some of our projects here http://createlondon.org/
In response to your second question - loads of things don't work for all sorts of reasons.
Maybe one universal is that partnerships are often very tricky when you are in the middle of a community, a funder and a local government in a city like London where the needs of these groups often vary.
Also every place we work is very different and we don't always have the time, money or expertise to explore the problem we are trying to solve as much as we'd like to before attempting a solution - I'm hoping Edgeryders can help me with some of the expertise though..