They were spending the profit from each user, not making a loss on each user.
It's a big difference.
To turn a profit all AMZN had to do was stop spending (and the consumers would not have been affected by the halting of spending).
For the AI providers, to turn a profit they have to raise the price.
OpenAI and Anthropic's moat is filling with cement faster than they can dig.
However, Amazon was not racking debt the way these companies are. Both their behavior and financials were miles apart from these ai companies.
So if you're asking about time, then amazon stopped a lot faster. OpenAI is 40 quarters old.
If you are asking about money, then amazon... also stopped a lot faster. OpenAI is losing money comparable to amazon's lifetime losses every quarter.