Why are Steam games priced unfairly in Euros indifferent to where one resides?

Regardless where one lives in Europe (including countries where salaries are lower than those living in France or Germany for example: such as Hungary, Romania, Latvia or Serbia to name a few) yet they’re confronted with 89,99€ at release considering EVERYONE in Europe as wealthy (further from the truth since there are nations in Europe where people aren’t paid 8000€ a month, some are paid x10 less than that).

Regional pricing is indifferent in this case no matter as to their actual income, it’s weird since they count countries where Euros aren’t used (Czech Republic, Romania, Serbia) whilst people there aren’t earning high salaries, like this: a Romanian earns 815€ a month but are treated no different: a 90€ game at launch (about 10% of their wage), for some reason they don’t bother adjusting it based on a specific country.