The effect is that very large proportions of the population end up with a better standard of living.
Just the other day, I watched a documentary about the protests that led to the opening of the Inner German border and the demise of the GDR. It was kind of sad to see people protesting for various kinds of freedom, knowing that most of them will only get choice (e.g. the choice of which country they cannot afford to travel to because their jobs were not competitive anymore).
By the way, I don't think that Europe has systematically more freedom (by the above definition) than the US. There are some life plans that you can only carry out in the US, and some that can only be realized in Europe.
Same with universities, vacation, labour laws etc...