I thing sgt is alluding to the fact that if Tesla hits an internal economic crisis, its stock price could fall far enough that one of the established automakers

I thing sgt is alluding to the fact that if Tesla hits an internal economic crisis, its stock price could fall far enough that one of the established automakers could acquire it or merge. And that this would be in their best interest, as Tesla now obviously has a significant lead in EV development and deployment. But this is contingent on Tesla losing its current trajectory. There would be no incentive for Tesla shareholders to do such a merger the way things look today.