I think what they're saying is if you tell people there's an economic downturn, and they believe you, that creates the downturn. Employees will be reluctant to

I think what they're saying is if you tell people there's an economic downturn, and they believe you, that creates the downturn. Employees will be reluctant to switch away from a stable big company job for fear of layoffs at startups. Investors will play it safe and avoid risky bets of the kind that could disrupt Amazon's businesses. And so on. Jeff may as well be saying "our competitors are uninvestable" but that would be too obvious and be discounted.