On the other hand, you have these enormous obstacles: upfront payments, minimum revenue guarantees, arcane and complicated reporting and security requirements, and strange nuances and differences in costs based on how you are using the music. It's a major pain in the ass.
All of this takes time away from building something people want. If you are lucky enough to find your product-market fit, the barrier to entry will keep competitors away and you'll have a huge head-start.