The potential scale of detriment in the market. Issues involving products with a large or potentially large client base are more likely to require product intervention.
The market context. Market mechanisms such as information disclosure and competition do not always work to protect consumers.
Possible unintended consequences. Whether the use of product intervention rules or the timing of the intervention would in itself create undue risk of further consumer detriment, including harm to existing clients and in the market (although this will not necessarily comprise a full cost benefit analysis).