I just know for me to start my own guitar repair shop in the US would require a lot more money, in both rent and compliance costs. I would need all kinds of insurance, and then probably fire marshall permission to store paints and finishes.
I would more likely get a job as a guitar tech there (much more work opportunities for that than in Taiwan, guitar stores in Taiwan would not hire a guitar tech because they would rather sell you an instrument than help you fix it up right) as it would be easier than starting up my own operation. In Taiwan I have no choice but to start up my own operation, simply for the fact that I wouldn't know where to get a job as a guitar tech.
In Taiwan almost all tradesmen are self employed. The only ones who aren't self employed are white collar workers, bus drivers, or any other jobs/operation too big for one person to do by himself. Even installations that B&Q says they do are done by self employed tradesmen who are contracted by them.
As for the US economy they seem to be in a decline, their debt is out of control and so are their government spending, which is needed to boost their economy. Industries are fleeing the US (other than consultants) due to excessive compliance costs, and the Gibson raid last year wasn't helping (I am surprised that they haven't completely closed their operation in the US). Not sure what the future will hold but then I don't know how the economy works, which seems to be more complex than most people realize. For example right now the US economy is a bit like, you get 100,000 US a year, but you've spent 200,000 US that year and anything more is credit. The total debt amounted to about $500,000 and increasing, which for most people would have resulted in bankruptcy as if your debt keeps increasing banks will not continue to finance you. Not sure what makes the US able to get away with enormous debt, as historically countries in that situation has experienced hyperinflation followed by economic ruin (Weimar Germany for example).
This could be a reason why people are migrating out of the US... they are scared.