But there are a lot of people working on this, including many who are already employing a "disruption" mindset.
I think it's refreshing that her approach isn't dripping with that classic tech-boy hubris of looking for two seconds and deciding you need to reinvent, but is rather rooted in affirming and uplifting good work that's already going on, regardless of whether that work is bootstrapping new and better systems, or may well just be passing on the cash— which in many cases could in fact be the most effective thing to do with it:
https://epar.evans.uw.edu/blog/long-term-impacts-cash-transf...
But education? Inequality? These aren't ones where some random person who hasn't been thinking about it for decades is going to come up with a radically new approach.
https://marginalrevolution.com/marginalrevolution/2010/09/th...
I personally believe that getting rich is a combination of 30/70 skill vs. luck - without the skill you're never going to get anywhere, but a lot more folks have skill than get the chance to get insanely lucky. Letting established market participants spend that money is almost certainly going to be more efficient than trying to start a new market entrant and hope it does well.
And by what metric do you compare the effectiveness of your school vs competition? "Retaining customers", so does that mean we judge a school's quality by year over year revenue growth, since that indicates customer retention?
Capitalism is not the answer to everything.
Education can be an example of that. Making a really cheap, high quality school is much better than funding tuition in existing schools. A school that manages to retain costumers indicates that they value the school so much there's nowhere better to spend the money. However if the school is "free" they might as well just go for it even if they don't get much out of it.