A player goes AI after two days of inactivity. The exception is at the start of the game where it takes up to day 4, for the inactive nations to turn AI.
Depending on the map there is a limit to the coalition which is between 3 to 5 players.
If players from the same alliance join with more than fit in a coaltion with the only aim to support them and help them win than this is "Wolfpacking". Wolfpacking is prohibited so you should report it so that action can be taken.
