It's not, except for the extremely disingenuous way it was all sold to us. We knew what would happen to the rust belt. We told them "the jobs would come right back" and "it's better for everyone." Well, it wasn't. And if they had the audacity to complain we called them every bad name in the book. And in the blue collar case the poor people that it helped were largely in other countries. Can you imagine a politician making that sales pitch honestly? "We're gonna fuck over the working class, but it's gonna really make our rich richer and some poor people on the other side of the planet will be a little better off." I dare say, that would not have gone over well.
You can tax billionares more, but they have the resources to get around that. A country is more likely to shoot itself in the foot with that kind of class warfare.
The country might start by standing up for the working class once in a while.
We can stand up for the working class by paying for extensive welfare spending via taxing the rich.
In both of these the quality of life is so much better than in my home land, despite the fact my earning here is a bit lower and I pay more taxes on that earning - you get so much for free/cheap from the government here that I don't mind paying the higher taxes & life is so much less stressful: free kindergarten from age 1, 14 months parental leave, 200 euro per child for 18 years (up to 26 years if they study & don't yet have an income of their own), university is free, healthcare is free (it is nominally free in my home country but here a lot more is included in the free tier & the quality is higher), tenants get protections people from my home country find hard to believe when I tell them, and the list goes on and on.
So yes, life in Moldova, Belarus or wherever you come from is shit but it's not shit because socialism can never work. And nobody is arguing in becoming more like the Ukraine they argue in favor of becoming more like Sweden.
And even in the Soviet Union salaries differed according to profession (doctors & professors didn't earn the same as street sweepers).
It's crazy to me that I pay a larger % of taxes on my high-5-figures income than Jeff Bezos, Bill Gates or Larry Ellison (or other robber-baron types with worse PR if you prefer).