Your link is broken.
Yes, judging them now the big AI companies are terrible businesses, they are just about, maybe, marginally profitable if they stop the huge fixed expenses which they cant stop because of their environment.
The gamble is that AI will increase in usage, while becoming more efficient and resisting becoming commoditised. I don't think there's a strong chance of all three of those happening, but if they did that would justify them losing money now in order to make big profits later. That's the gamble.