Earlier quoted context omitted.
What?? Replace DRAM with peaches or table legs and you have the exact example they give you during management training to explain implicit collusion.
That's when you raise prices without a change in the market conditions. OpenAI is creating more demand, therefore the price must go up, if it didn't then there'd be shortages.
If you know demand will go up because Microsoft announced that each new Xbox will have 2TB of RAM, that is perfectly fine. Or if OpenAI issues a press release that they intend to buy half the worlds RAM.
If you know demand will go up because you learn the volume your customer intends to purchase from your competitor during confidential negotiations, that is not ok.