Alcor is specifically structured for longevity - their money is invested to provide long term (longer than human life) returns to ensure their operation. As it

Alcor is specifically structured for longevity - their money is invested to provide long term (longer than human life) returns to ensure their operation. As it is, ongoing maintenance is cheap - they receive a delivery of liquid nitrogen every week IIRC, which is used to top up the dewars, but it is weeks to months between required top ups, with no power required.