Performance art can be produced in a coffee house setting.
Performance art can involve the audience with taste, smell and sounds not available with electronic media and not practical with conventional theater. This is due to the usually small audience.
Performance Art is brief, about 15 minutes long. This is a problem in that you cannot get people to come out to watch a 15-minute performance.
Performance art is the ultimate in creativity. Since it has so many possibilities at creativity, it's essence tends to become creativity.
We're all so mauled by information, but it's recycled information. We need to shut it out. So, you've got to get bizarre. This is an artist's purpose - to break away from the recycled. Performance art can do that.
A performance art piece is unprecedented. It is difficult to censor since it has a good possibility of never being done before.
All good performance pieces have some philosophical validity. That's the difference between mere theater and performance art.