Using Single Account on Paid Course, Multiple User?

What do you think guys, when an account on paid online course be used for many user?

Or if it's restricted one login per one account, they can just using filesharing site.

Just need some point of view from you guys, as a developer.

Case Study: Treehouse is small case, some company offer hundreds of bucks monthly, but really worth the money. Not sure as a student can afford it for months.

Thanks.