Software engineers in Europe aren't "underpaid," there just aren't enough highly successful European tech companies to make the job market there as tight as in

Software engineers in Europe aren't "underpaid," there just aren't enough highly successful European tech companies to make the job market there as tight as in the US. So they're paid less than what they'd be paid in the US, but that's just because that's what the market pays there IMO. There isn't a "fair" price other than the market's to judge whether someone is overpaid or underpaid, just offer and demand...