Invasive Alien Species

The title of this “Discussion forum on development of IAS management tools and guidance” is biased towards 'invasive' alien species.

However, some alien species undergo a lag phase before becoming invasive (e.g. Chinese mitten crab in the UK, the pumpkinseed sunfish in Europe), and some alien species have no history of being invasive until they are introduced into a novel environment under circumstances that favour the species becoming invasive.

So, if 'Prevention' is the most effective and cost-efficient means of managing alien (non-native) species, then why does the title of this discussion limit the discussion to 'invasive' species and thereby exclude 'non-invasive' specie, which could become invasive in the future and therefore warrant risk analysis and management?