Thank you. Yes, I think that there is still some ways to go with making these cost efficient vs other tech. I have heard people mention similar issues that you are rightly calling out. I believe the hope is the viability of these designs relies on cost reductions that would come from mass production/ economies of scale. I don't know how realistic that is, but it does tend to happen when things get produced in greater quantities, smart people find many optimisations to reduce cost.