At the time, enforcement was pretty random, and I think based on how heavy your traffic was.
They weren't all on Claude (though it was the preferred setup) and some people had dozens of accounts hooked up with proxies to avoid hitting limits.
I for one hope it all comes crashing down, when reality hits these companies. I like being able to ask some LLM a question, when I don't know something. I also like asking it for examples. But I don't let it write my code and burn tokens to no end until it passes some tests or something. My usage is at human speed, and I feel like that is sufficient for the technology to be helpful. For the rest I will use my biological wet ware, thank you.