If you were to go back and look at the average productivity of the US worker over the past 90 years, you will not see a single technological innovation. You won't see air conditioning. You won't see cell phones or computers or the internet or Microsoft Office. You don't see it because it takes a long time for productivity to be absorbed into the workplace and used by employers.
Bezos argued that if AI makes it cheaper, faster, and easier to invent things, employment will ultimately rise because even though you're shrinking the number of people needed by 10x, the technology will create more than 10x as many opportunities.