More isn’t Infinite
Why do people think that more resources=infinite resources? The fundamental problem the economy is trying to solve is that there are limited resources but unlimited demand. If demand hasn't changed, an increase in supply, even a 10x increase, will not solve the problem.
The standard of living will go up, people have air conditioning now which not even a King would have access to before. You'll still need a job:/
Source: https://www.businessinsider.com/elon-musk-retirement-saving-abundance-ai-tech-tesla-spacex-billionaires-2026-1