[kevintxwu]

You're right - my language was too dismissive. The general idea of what I said above is still valid though.

Another point: the cost per student does not increase linearly with time. Instead, advising becomes significantly more efficient after we've already taught the student our core insights. This means we're much more willing to spend additional time on students the more time we've already spent.

In contrast, houses can't "learn" how to sell themselves like a student can, so real estate agent costs are linear with time spent.