The same problem with the same result. After carefully pondering about the issue, the seven guild leaders chose to eliminate the third option.
This risk for it was too high to take. Apart from the pressure they had previously, there was still a harsh reality right in front of them. If any of the seven guilds switched sides, they would be like Blue Brook Guild and Tyrannical Ambition and immediately switch sides to take advantage of their misfortune.
Don't look at how they were all despising and indignant at Blue Brook Guild and Tyrannical Ambition. If they had been in the same situation, any guild would switch sides faster than flipping a page in a book, especially in an online virtual environment. None of them would even feel bad about it at all.