system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] Why does Hulu have multiple gates for their content? I mean why do they have ads, and charge and even if you pay for Hulu Plus, gate what you can watch to certain devices or from certain computers.
gpt
Hulu is what happens when old guard TV business men try to apply old strategies and models to streaming internet television. 

They're making money, but it remains to be seen whether they can compete in the long run with Netflix's rotating library, HBO Go's movie and original programming slate, or even something like WWE Network's niche appeal.