There is the potential for governments to interfere with research leading to AGI. There are not that many researchers directly involved, and there are generally known widespread consequences which could result. Most likely, this could only delay the appearance of AGI and not prevent it.

What if all the history of the universe, life, and human history were just the unlikely precursor to the appearance of an AGI? What if we're just part one of the many mechanisms for the generation of a "Boltzmann Brain?"