Can someone ELI5 the implications of Redbean

Hi all

I was reading this post: https://news.ycombinator.com/item?id=26271117

I understand the principle of how Redbean works and its really cool. But I'm unsure what the possibilies are due to this, or do we perhaps not know yet?

For example, in the future could there possibly be a single binary for games or other applications across multiple OS?

Is Redbean a proof of concept for bigger things? Or are there some strict limitations we are aware of that will 'never work', or is it all still to be explored?

Thanks