In Stellaris, there's an ancient stellar empire called "disinterested gamers", which is basically an ancient civilization living in a Matrioshka Brain that became so addicted to full dive virtual reality that they really have absolutely no interest on further exploring the galaxy.

Basically immortal beings that spend their whole time in many virtual worlds, while their whole civilization is automated.

I think this is the case for most intelligent species in this galaxy and the main reason why we don't see more activity in a galaxy with at least 200 billion stars: people out there just don't care about what happens in the cold, dark outer space.

In the "end of history", we'll be living in what we would call now sandbox games. We'll be simulating any world we desire, fully diving into virtual realities that will look like so real we won't bother doing anything else. The "hype" we'll be traveling to other virtual worlds, created by other people.

Meanwhile, the Artificial Superior Intelligence will be exploring Alpha Centauri, eager to find more biological beings in its quest to bring peace and order to the universe.