So if your point is a separate one, that Alcor et al might have to close, eg as a result of war or global financial collapse, then that is a very reasonable point and absolutely a potential cause of failure.
It is one of the things that Tim brings up as well: "The cryonics company goes bankrupt and doesn’t have the means, the will, or the organization to create a plan that will save the patients. I mentioned that this happened a few times with some of the earlier companies. The major companies today claim to have secure backup plans in place in case of the worst case scenario, and this security blanket is the main purpose of Alcor’s sizable trust."
It is one of the things that Tim brings up as well: "The cryonics company goes bankrupt and doesn’t have the means, the will, or the organization to create a plan that will save the patients. I mentioned that this happened a few times with some of the earlier companies. The major companies today claim to have secure backup plans in place in case of the worst case scenario, and this security blanket is the main purpose of Alcor’s sizable trust."