In practice, a reduction in the claims ratio of around one percentage point can often be realised with manageable effort for the actuaries. Pricing does not require intervention in mass processes - unlike claims processing, for example. It is carried out and monitored by a small number of actuarial experts. This is another reason why a lot can be achieved here with a manageable amount of effort.
This is one of the reasons why pricing actuaries in the market are still tending to add jobs instead of cutting jobs.