> Unicorns like Udacity

I thought that was an hyperbole. Then I checked on Wikipedia: "While not yet profitable as of February 2018, Udacity is valued at over $1B USD having raised $163M USD from noted investors".

Probably a good moment to remember that "unicorn" is an arbitrary label and valuations are entirely based on subjective speculation and extrapolations that may be entirely unrealistic.

It's never about how much money a company can make, it's only about how much someone might pay for that company. At the end of the day, a lot of startup investment is more like trading baseball cards than producing anything of actual value to consumers.

>Most of their spendings goes into Marketing and not actual R&D for education.

My facebook newsfeed is flooded with their advertisements lol and I don't even use the newsfeed much.