The document discusses opportunities for carriers and OTT providers in the changing mobile ecosystem. It notes that OTTs are accelerating changes in user behavior and the shift from voice to data revenues. However, the real threat to core revenues comes from local broadband competition rather than OTTs. While OTTs in voice and messaging represent zero new revenue, the overall OTT model provides opportunities to leverage infrastructure, gain closer access to customers, and offer new services like quality of experience guarantees. Telecom companies need to redefine their core assets and value proposition in order to capture new opportunities in this evolving landscape.