Nonsense.

Albeit I'm no economist, I'm quite sure you should compare salaries to costs, not gdp/capita. Whether unemployed/retirees and children can afford a ChatGPT pro subscription seems irrelevant.

Let's take Madagascar, GDP per capita is $ 538. But the average salary is above $ 150/ month.

What interests us really though is not really the average salary in the country, rather the white collar (the end user's) worker's one.

In Madagascar software engineering salaries seems to range from an average $ 850/month for junior roles to well beyond $ 2000 per senior/specialized roles.

And this further ignores that such expenses are generally paid by employees, often with bulk discounts compared to B2C customers.

Which leads us to conclude that if ChatGPT Pro is such a performance multiplier, it is worth the price even in the poorest of the poorest countries in the world.