> Well that's why, because you already make very good money here. But the vast majority of Poles, or even Europeans in richer countries, don't make anywhere near that money.

Sure but we're talking in a technical forum where most of people work in software. Most devs in Poland make good or really good money.

> But what about those on less fortunate salaries with no wealth to their name, who would get a shot in the US for a 10x pay bump?

I can't imagine a person who makes minimal and moves to US in hopes of making more. Most people in EU who make minimal salaries live from paycheck to paycheck, they don't save enough to risk moving across the world. I honestly think that this person either ends up homeless or makes minimal salary in US too and probably ends up worse, due to lack of public healthcare/social support. If you want to make good money, you can do that in most countries(obviously with exception of 3rd world countries, countries with an ongoing crisis etc.). Moving to US won't suddenly make it happen.

If you already work in IT then the salary bump these days might be significant, but I would argue that salary to CoL ratio will stay roughly the same. Unless you're exceptional at what you do and have an extremely good offer, you're probably not going to improve your life significantly by moving. Why would moving to US give you 'a shot at 10x pay bump' that you didn't have in your own country?