Hmm...except that cryopreservation is still, as of this point, a complete crock of shit. Trying to find a necromancer would be more productive.

As an ex-biologist, I can assure you that horrible cellular damage is being committed to these "preserved" people. I used to flash-freeze all sorts of cells, ranging from bacteria (e. coli) to animal (IMCD3 and MDCK kidney) to human (Human Embryonic Kidney, Primary cortical and hippocampal neurons).

These protocols are pretty simple. Pellet and re-suspend a small vial of cells to dilute out the media, replace with a special preservation media then dunk the entire 5mL vial in a big pot of liquid nitrogen for a few minutes. Then it goes into the deep freezer (-80C).

Sadly, even though this is a tiny aliquot that is frozen almost instantly, cell death on thawing and resuspension is immense. Like, it's a good day if 50% of the cells live. It usually doesn't matter, since these cell lines are immortalized and they just start growing again, but it illustrates the point. Despite the most ideal circumstances, cells hate to be frozen.

Now, imagine you are trying to flash freeze an entire body. They do this by perfusing preservation media through your blood, relying on your body's circulatory system to get the media in all the right places. This takes time. Perfusing a small mouse with formaldehyde takes at least 5-10 minutes. A human body? Practically ages I would guess.

All the while, cells are dieing left and right because they are no longer getting a steady supply of oxygen (and instead a bath of relatively cytotoxic preservation media). When the body is finally perfused fully and dunked into liquid nitrogen...flash freezing isn't immediate. The outer layers freeze much faster than the inner layers.

Ok, so just freeze the brain? Same problem as before, just on a slightly smaller scale.

Ignoring all the cell death that has been happening for the last hour, how about thawing? Well, let's pretend its a "good day" and 50% of your cells live. That might be ok for your skin, liver, or spleen - they are going to be unhappy but still alive. But 50% of your neurons dieing? Hmm. Also take into account that neurons don't regenerate. You just killed half your brain. Even super optimistic numbers, 70%-80% survival rate, still leave a lot of your brain as goo.

This is all just biology. I'm not even touching the morals and ethics of companies that are under no obligation to actually do what you paid them to do (since you are dead).