The question is flawed.

People who do not pay for ChatGPT often have money and prefer not to pay for for a subscription for several reasons including, but not exclusively: 1) They don't use ChatGPT often enough to justify it 2) They use alternatives primarily (a subset of #1) 3) They choose to spend their money on other things

How can an advertiser tell the difference? Which is a stronger signal of having money: paying for something, or not paying for something? Furthermore, with all those reasons, why would advertisers prefer those people in ChatGPT? Advertisers are trying to change your behavior, usually to spend money the way they want you to. If you’re rarely using the service and don’t easily part with money, you’re probably less worth persuing than… well the person who is the opposite of those things.