Bitcoin doesn’t support this. It’s what is being mirrored, yes. But, Ethereum is kinda like the distributed operating system/network that could/would allow 24 hour trading without having a clearing-house middleman.

Ethereum has the potential to carry real world assets on its chain. Why does an share of stock have to go through a clearing house when it could be an L2 on ethereum? A company having a total of 1 million shares is no different from a L2 coin having a total number of 1 million coins. They can even be fractional too.