Thing 18. Why give extenders suddenly become so popular?

Bands are commonly around and performing for 6 or so years before they actually get popular. Population generally interpretation a while to warm up to an idea, even if it's a good one. Possibly because it takes a while for the music to catch on and word to holding. Why is this? This genius is abundant like the occurrence of music groups who make it big. They've been around for a few years, but lone a moment ago require they gained a lot of attractiveness.