In a recent EconTalk episode, the CEO of Burning Man [1] says otherwise. They even try to police bartering, based on tips from the community.
[1] http://www.econtalk.org/archives/2018/01/marian_goodell.html
[1] http://www.econtalk.org/archives/2018/01/marian_goodell.html
"it used to happen more in the early years--certainly in the early 2000s when, frankly, when the dot-com concept was coming to life, one of the things we would see which was a little related to Gifting and a little related to Decommodification is, we would see camps have logos from their start-up in front of their camp."
The point is that Burning Man's community is not built around transactional experience, and that value shines strongly throughout the experience.