Plus it’s much more challenging to implement. Takes a fair amount of imagination and cunning to pull it off successfully. Spatial versus linear which is much more $$$. Teachers just don’t have the bandwidth to effectively and consistantly do this alone. Takes a team but who can afford that when they can’t even afford pencils.
Yet there IS a biz model if you have the right buyer. Specifically someone willing to pay for performance via a Social/Development Impact Bond. Outcomes donors can potentially save billions using these instruments and pass some of that savings back to the investor.
Also industry is willing to invest in pay-for-performance programs as they are direct beneficiaries of the product. The idealistic academicians are closer to the industrialists than they realize. Both value wisdom, creative problem solving and a range of intelligences. Let’s look beyond blingy EdTech, to achieve the goal.