Festivals use a lot of what are called temporary or pop-up spaces. During a festival, a group may perform in a fire station, a church or a community centre, for example. I feel that it suits the nature of a festival well. After all, the main idea is to provide access to more artists.
Festivals are where you may see pop-up shows, as they are called. They are spontaneous or surprise shows with new artists, or with an established artist who wants to do something different from the rest. But I agree with Mr. Weisz: It's intended to be spontaneous and I feel that we must always use it because it is a way to make art available. But we have to consolidate the performance spaces we have, including Mr. Weisz's network of small halls.
After introducing a new artist in a festival, we start looking for a performance venue. Often the major halls cannot take artists of that kind because not enough people are ready to buy tickets and because the costs to operate a large hall are very high. The opportunity often comes from independent venues, hence the importance of their complementary role in the continuum that we all must have together.