Pre-sales are strong for Tenet and in the countries, where it's already released, I heard of sold-out screenings (e.g. in Norway). In one cinema in my city in Germany, they have a screening on thursday with 90 sold tickets and that's just one cinema and one screening. In China alone, it's projected to make 100M. I strongly believe, Tenet will make its money back, even with close to no BO from the US. And if that's the case, WW84 and Dune (if it's ready) are going to stay in 2020 and maybe Black Widow will be theatrically released after all.