You need to solve diseases and make the cure available. Millions die of curable diseases every year, simply because they are not deemed useful enough. What happens when your labor becomes worthless?
One of the biggest factors in risk of death right now is poverty. Also what is being chased right now is "human level on most economically viable tasks" because the automated research for solving physics etc. even now seems far-fetched.
You should read about workers right in the gilded age, and see how good laissez-faire capitalism was. What do you think will happen when the only thing you can trade with the trillionaires, your labor, becomes worthless?