All those frameworks have their own DSL/config languages that lack expressiveness and inevitably become a really bad scripting language to support everything pe

All those frameworks have their own DSL/config languages that lack expressiveness and inevitably become a really bad scripting language to support everything people want to do. Pulumi started with actual programming languages instead which gives you full expressiveness, IDE integration, and more, without learning yet another new language. And since infrastructure is just represented as objects in the language, creating and combining them in complex ways is much more natural than wiring up configs.