Need help with Member Area functionality and selling courses in a website

Hi All. I need help understanding how I can add courses inside a website that 1) purchasers of the product can view without downloading and 2) purchasers of the product can not share the link to videos created on YouTube or Vimeo which are part of the purchased course. 

QUESTIONS

How can I connect a Vimeo or YouTube video and have it NOT shared when someone purchases an online course or class?

How many different online products (courses or classes) can I have in one Member Area?

My client is VERY upset because she does not think the Member Areas has the functionality that her Wordpress site has and wants to ensure that when someone buys a class that is a video on Vimeo, that video link is not shared. 

Thanks for the support!

Giselle