So €2000/mo is not too far from what you'd expect "minimum wage" to be, equity notwithstanding.
http://www.finlandforthought.net/2008/07/14/no-minimum-salar...
Also, these are not directly comparable to US salaries, because you get a lot of things almost for free, which you'd have to pay for in US: education, healthcare, transportation, sauna every day, etc.
Someone is paying for those things, so they're not free.
In terms of tax dollars per capita, the US is in the middle/top of the EU. However, it looks like we get less for our tax dollars than EU folk do. It's unclear how more US tax revenue would change that.
On the other hand, the US is significantly above the EU in terms of income and GDP per capita.