Really shortsighted to think of the value as in the cash extracted from the student. The real value is that more people are educated. Ways that an educator can see the cash from that created value are various. They can make job referrals, they can do credentialing signaling, they can do ads, they can sell premium tools while providing free education on how the use the tools. So yeah, education can be free, should be free, and will be free (and in most cases are already free if you consider public schooling).