I agree with your overall point, but you have the regulatory differences between the US and Europe exactly backwards. Europe (excluding England somewhat) has a statutory legal system. Things are either legal or illegal according to laws that have largely been written down ahead of time that anyone can go read and figure out.
In the US we have a common law system where much of our law is written by the courts in response to specific cases where judges interpret the general principles described in the "simpler laws" you speak of.
In practice this means that, under many circumstances, things move a lot slower in the US because of the time and expense of litigation (and even the threat of litigation). This is one of the reasons that it's harder to build things in the US. Our public transportation systems (trains, subways, etc) cost on the order of 5-10x more than similar ones in Europe. Our different legal systems is one of the big reasons why.