SETI again

> For example, let's say that every race, creed, and culture on Earth
> agrees to ZPG and a moratorium on space travel, with the single
> exception of Albania. The obvious outcome millennias hence is a Milky
> Way overrun with Albanians.

The obvious outcome in a couple of decades or less is the Albanians
blown away for not going along. Any philosophy with that moch
lock-step agreement behind it (at least outside of Albania) is not
likely to be very tolerant of those not toeing the line.