MP Game: How bad is too bad?

[Sombre]

At what point would it be considered acceptable to remove a player from a game, based purely on how badly they're doing?

This topic was provoked indirectly by something happening in a current game, but is in no way /about/ that game, since I personally wouldn't ever remove someone from a started game for skill level and in that game I don't actually have a full picture of what's going on. It set me talking about skill levels in IRC and that set me thinking about this topic.

Let's assume all settings in the game are default. It's a 10 player game, 200 provinces. After 10 turns, it's clear one player is doing very badly indeed and is dead last in terms of territory, incomes, research - they could also be doing horribly diplomatically and in terms of actual battles and/or build/design choices.

How bad would the player have to be doing in order for you to want them subbed out of the game? How long would you wait for this to become apparent?

Discuss!