Why haven't millions of web developers adopted Telco APIs?

Telecommunications and the Web are merging. The potential of Telco APIs have expanded dramatically.  Smart Pipe and Content and Service Provider business models are driven by APIs. 

What does a successful "Telco 2.0" API strategy look like? 

• What do developers need to adopt Telco APIs? 
• What are the implications on network operations?
• What are frameworks for thinking about tools and technology?