Which clones? And why not the others?
Which is my point: it seems easy to clone something that seems conceptually simple, but is the result of all kinds of UI, UX, performance, etc optimizations. The reason someone might choose Obsidian over these so called clones is not just marketing, I assure you. The reason people attempt Obsidian clones is that they think creating todo-list management tools, etc is all it takes to implement a PKM, and that that is easy. It is not.
Right now there are kinds of tools I wished existed, that I would pay for, but AI does not automatically provide the insight, good taste, technical excellence, and grit needed to create these products. I could do them, with AI assisting, but do not have the time. It is not a simple matter of saying: Claude, create or clone X, Y, Z.