True. And because of this I think at this stage it's impossible to say which one will become huge. They're all lacking two extremely core components: credibil

True. And because of this I think at this stage it's impossible to say which one will become huge. They're all lacking two extremely core components: credibility and any sort of structured curriculum. Credibility: What employer understands the value of Udemy or Coursera courses? Essentially none. And understandably so. Structured curriculum: No high school student today will spend on their own time, instead of going to university, 1-4 intense years of Udemy or Coursera courses. A very large majority of high school students haven't the slightest clue what they want to spend their life doing. Without any clue, there is no way they will have sufficient drive on their own to lead their own education efforts. I haven't seen anything from either of these websites that even come remotely close to solving these issues.