The comparison is irrelevant because it's an accounting identity that capital is production minus consumption; cryonicsers, by consuming less, increase capital and increased capital increases long-term exponential growth. (Which I've pointed out in several ways so far but you still haven't understood.)
If there's a secondary market capable of absorbing your bonds, then your bonds don't contribute significantly to the available capital.
And on the margin? If no one's bonds 'contribute significantly', and one must 'contribute significantly' to affect anything, then we can just play the sorites game and wind up with a bond market in which the available capital is the same and yet no one actually has invested in bonds! Fascinating how your logic works.
Cyronicsers, by producing exactly what they consume (less the cryonics expenses), contribute nothing to capital while suspended.
Dead people, by consuming non of what they produced prior to their death, contribute exactly the same, except that it costs less to remain dead than to remain suspended.
Where is the maximum? What number of people put into free suspension would maximize long-term growth until they were removed. All of them? Then who does the growth? N, or N% of them? Why non N-1, or N+1; what changes from the current situation to the one in which N...
Imagine you accept the main idea of cryonics, that if we freeze brains future technology is likely to be able to extract the encoded information and revive the person digitally. [1] While this currently costs about $120K/person, if we did it routinely to everyone it could probably get down below $1000/person. Which is interesting: the current cost of averting a death is around $1700, but someone who doesn't die of malaria is still going to die of old age, so you can't really say their death was "averted". While someone who is revived after being frozen wouldn't live eternally, they might get to experience thousands of years of subjective life. In terms of life-years, getting cryonics to be really cheap and paying for people to get it sounds like it beats GiveWell's top charities.
Aside from not agreeing that cryonics is likely to work, however, I don't think the value is actually all that high. A future world which would revive large numbers of people we freeze today would be massively different from the current world economically, but would still have constraints. There would be some number of digital people that could run simultaneously on whatever people-emulating hardware they have. Preserving additional 21st century minds would give future people the option to run revived people instead of new people, but I don't think it affects the overall number emulated.
[1] I don't think this is likely.
I also posted this on my blog.