Networks will always act in their own best interest. Aggregators will come and go. But digital television is already becoming a huge business. In fact it's going to be the primary business, so stations must focus on building that business in a way they can control well into the future.
Netflix won, Hulu came in second. Amazon may be third but we won't know for sure until they cross the finish line. And the iconic broadcasters that built the TV industry and controlled it for the past 70 years are nowhere to be found.
The coming years will look like the late '90s TV "gold rush," when companies staked out channel space in the expanding multi-channel universe. This time, though, the prospectors will mine distinctive content that can woo audiences in the "over the top" TV market.