The channels of transmission across the different shocks can be gleaned by introducing the shocks one by one, cumulatively, starting from the change in trade costs, followed by the change in willingness to pay (Figure A C.1).
Under the first scenario of no regulation and given that the shocks are added cumulatively in the figure, the adverse effect of a reduction in trust generating reduced willingness to pay more than compensates for the beneficial fall in trade costs. Although getting rid of data flow policies would reduce costs and thus raise exports (by 1.86%) and GDP (by 1.28%), global exports and GDP are projected to fall when regulations are abolished and the trust effect is taken into account (by respectively 2.12% and 0.91%), because regulations come with enhanced trust among consumers and thus increased sales. As explained above, the size of the trust effect is based on information in the business questionnaire on the size of the cost effect of data flow policies relative to the size of the sales effect.
In the other counterfactual scenarios, the willingness to pay shock reinforces the trade cost shocks for regions which currently have ad hoc authorisation data flow policies (the fourth approach in Figure 3.6), because both trade costs will fall and willingness to pay rise when moving away from ad hoc authorisation towards a safeguards approach. Instead, for regions starting from no regulation changes in trade costs and willingness to pay work in opposite directions. For example, moving to a safeguards approach will raise trade costs which limits trade, whereas it will also raise willingness to pay which will increase trade.