>>720322041
That's why they did the 18 months deathline. It was a humiliation ritual. They knew that it would be impossible to develop anything reasonable in that time and they wanted to shame Obsidian by forcing them to release a rushed, crappy game and then point and laugh at them for how incompetent they are and how much better Bethesda was.
But then, Obsidian still delivered with a masterpiece, in spite of the crippling and unrealistic deathline, completely mogging Bethesda in the process.