In economics, the most important question is "as compared to what?" You might be able to afford a gold plated system designed with 15-9's of reliability, but do you want to work 10 hours week to afford that system? On the margin, do you want to have a 10% smaller house to pay for that level of medical awesomeness?
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I suppose a parallel would be a Mars Helicopter based on off the shelf components vs making one of radiation hardened components.
It may work, and it may work very well in fact. However, if you can afford it - you'd opt for something with more reliability and consistency.
In economics, the most important question is "as compared to what?" You might be able to afford a gold plated system designed with 15-9's of reliability, but do you want to work 10 hours week to afford that system? On the margin, do you want to have a 10% smaller house to pay for that level of medical awesomeness?