According to a commentary, these findings provide proof of concept that it is possible to have significant effect on symptoms of depression and anxiety, suicidal ideation, and help seeking with an intervention focused on insomnia rather than directly on depression. It notes that in not finding a significant reduction in the incidence of major depressive episodes at 6 months, despite the reductions in other important variables, such as disability, the study challenges us to question the current criteria for depression prevention trials. The commentators suggest that “the study emphasises the potential of non-consumable interventions. Interventions that require expenditure of provider time or other resources, such as medications, are consumable; the time a therapist spends on each session with a patient can never benefit anyone else. This is one of the reasons health care is so expensive and hard to scale up. SHUTi, on the other hand, is a self-help, fully automated intervention. The largest costs incurred were in the development of the intervention and the clinical trials that showed its effectiveness. From now on, SHUTi could be made available at the cost of hosting the site, which would mean that its marginal cost (the cost of administration to one more user) would gradually approach zero. Thus, SHUTi (and interventions like it) could potentially become a massive open online intervention, available to anyone in the world with access to the web, at no charge to users or to their country's health-care system.”