For each, we extracted insights from the regional variation in price and carbon intensity (Section 4.1) and, when possible, from full TEA of FOAK DAC plants (Section 4.2). The results of this analysis drive our obstacles, and more specifically obstacles primarily linked to the high energy and cost requirements of DAC technologies and their current development state. When obstacles are identified from this analysis, they are marked following the complete list of obstacles presented in Section 5. Obstacles are denoted as '#A', where 'A' refers to the number assigned to each obstacle.