[ASneakyFox]

Its not hard to detect. Its just hard to reconcile. Hulu can block service since they already have your 10 dollars. And you're unlikely to go elsewhere. there's not many other services streaming new episodes of your favorite sitcom.

But free services and websites ( you know the stuff that's supposed to be ad supported) typically value user traffic over ad revenue. Especially if they're still in the growing phase, or if there's lots of easy alternatives to your service (the case of YouTube). They wouldn't want to risk you hopping over to another service.