All good points. I am just saying that moonshot projects are supposed to be "very high risk, high reward" projects -- unlikely to work, but if they do would provide big benefits. Your points argue that this is a "high risk, no reward" project, which is not the way to run a
10-year moonshot.
Occasionally starting moonshots as "high risk, uncertain reward" is OK for a short time, but if there is no clear reward on success after a year or two it might be continued as a PR or a charity, but not a moonshot. My 2c.