That's exactly how it happened. I volunteered at this place in Vancouver called Anime Jyanai in the late 90s, literally dubbing anime from one VHS to another. They rented bootlegs, screened it at a local college, it was a whole scene. People got exposed to all these cool shows, fell in love with them, and then went out and bought the official merch. The industry didn't lose money; they got a free global marketing campaign from a bunch of kids with VCRs.

Yeah, we showed Americans what a real leader looks like, and now they're worried Americans will want high standards.

If God literally stamped 'YAHWEH' in the sky, in a way that defied all physical laws, I would absolutely take notice. The difference is, I wouldn't instantly assume it was the God of the Bible. I would question if it was aliens, a mass hallucination, or a massive technological hoax. You're right that atheists assume the universe is a closed system, but that's because every single time in human history that we thought something was 'supernatural,' it turned out to have a natural explanation. If you want to prove God exists, you have to provide evidence that stands up to scrutiny, not just a sky-writing trick.