There was a fairly convincing discussion on HN about a month or so ago that argued that this is enabled by the large difference between the monthly subscription

There was a fairly convincing discussion on HN about a month or so ago that argued that this is enabled by the large difference between the monthly subscription costs and the API costs to access the very same models. That the primary purpose is not distillation but pricing arbitrage. Data collection for distillation is just a bonus side effect. Bringing the prices of monthly subscriptions much closer to API rates would kill the arbitrage business and make distillation a much more expensive (and harder to hide) activity. Raise one, lower the other - whatever.