Their social structure is roughly about a 100 years behind us, with a few little technical things mixed in which makes it seem otherwise. They live in little apartments, work in cubicles, use public everything, and wait in lines, not for simple pleasures heaven forbid, but only for the serious things in life. Life moves at a slower pace.
That is not to say there is not something good in all that...because there is, and we could learn a lot from them. But the comparison is not apples and apples, by far. Again, I would suggest gleaming the best of both, throwing out a lot of American waste, and slowing the pace down to something more sane. But, there is a down side to their way too, and traveling there (even regularly) is not an accurate gauge. And of course they talk up their way, just like a majority of us talk up our way. But there is a reason ALL other countries follow the American commerce model, come to our schools, and relocate for jobs, etc. ...because it ain't all that over there. The grass ain't really greener.
But the real answer about those countries, and to best answer your question...is because they are only doing part of what it takes to exist in the world. They look good, because they have selected just the things that are most appealing, while the complete village is made up of other less attractive and productive countries, that would have to be combined with them to make a fair comparison with the US. They are mere bedroom communities by comparison. There are some big pieces missing. Meanwhile, they think we all live in Hollywood (or Texas
).