Because it's not scalable (yet).

For their startup to increase revenue to 100x or make $7M in revenue, their efforts/time put in/costs would need to be 50x-100x higher. For it to be a startup, at this scale their efforts should only be 2x-3x higher.

In other words, if they can't get to $10M in rev with 20 people or less, it's just not scalable and right now it looks like they need several hundred tutors, program coordinators etc. to do so.

For it to become scalable they have to do something like this https://onemonthrails.com/ for design. ;)