All of Europe seems to be quite a stretch. I am earning north of 100k euro as IC in the Netherlands, most of my peers are doing the same here.
I also know quite a few people in Ireland, Germany and Sweden doing better than me.
That's the problem with quick Google searches and not living and exploring job market in the given country. I agree that there are truly a lot of developer jobs in NL paying in 40-70k range. However, there is non-exceptional number of jobs paying above that.
I won't name the company I am working for, I will just outline industries which offer 80-120k+ here in NL: obviously, FAANMG; financial institutions; hospitality; healthcare. And most probably a number of others that I am not aware about.
Also there is quite a discrepancy in pay among companies even in the same domain, so generalizing is difficult. E.g. I used to work in TomTom and I know the pay there is in 40-70k range. However, I cannot say that it will be the same for e.g. Phillips.