Just because you're not going to starve, doesn't mean you won't work.
Maybe not you... but I can guarantee that there are people who would see it as an opportunity.
Also, those countries make their living off the efforts of capitalism... the capitalism that's driving our country to the forefront of pretty much every field. Yes, there are things we've learned from Japan as far as car manufacturing processes are concerned. Sweden's big exports (machinery, resources) go to fuel this capitalist evil and keeps all those people making an average under $40K/year. Denmark provides this capitalist machine with machinery, pharmaceuticals and other things as well. Finland... resources (wood) and even rifles... without our insatiable demand for stuff, the countries you listed would likely be up the creek without a paddle trying to find another "greedy" group of people to send their resources and items to.
Now, I'm not saying that we'd vanish of the face of the Earth, but the fact that they are so successful at exports to the US is because of what happens here. Without the competition and "greed" put forth on a daily basis, these countries would be at a loss for jobs and would decline both their ability to support that lifestyle and maintain those average salaries.
Also, factor in the fact that none of them really have to have a standing military for fear of someone invading them... not because the world is a better place magically, but because nobody dare try it today (and you know people like Saddam, and recently Russia were trying...) because we'd literally destroy them. If not by military force, but by tariff and economic woe.
Yes, I'd argue that the countries you listed actually benefit from the way we live in so many ways that's it ridiculous to think that we can do what they are doing without having our own source of major export and protection.