With online distribution, we've hardly even seen billing done correctly. I'd much rather pay at the end of the month my usage bill for content that way than to have to cough up my credit card for every fifty cent transaction. Online training makes us jump the same hurdle. Television broadcasters understand exactly their audiences and how their stations reach those audiences. Yet online services have little if any information about viewership and how the content is used.
Customers expect more.
Think dial tone . I can't even remember the last time I didn't get a dial tone on my phone. Carrier-class implies scalability. That the content is staged correctly at caching points out at the edge of the 'net, as close to the Last Mile as possible. The Internet can provide a solid revenue stream to digital content developers.