Perhaps a better line to draw is between lawyers and other kinds of professionals, lawyers being overrepresented in Congress. But the track record of nonlawyers (doctors, for instance) in Congress isn't all that great either.
[Citation needed.]
http://readwrite.com/2011/08/02/older_people_not_using_smart...
Take a look at the average age of...
Republican congressmen in 1949: 54.9
Republican congressmen in 2011: 54.9
Democratic congressmen in 1949: 50.4
Democratic congressmen in 2011: 60.2
The democrats have gotten older, but not by much more than the general population. The senate has gotten older, but not dramatically so.
http://online.wsj.com/public/resources/documents/info-CONGRE...
I think one of the "problems" is that innovation is actually picking up speed dramatically. So even if the politicians aren't older, they are more likely to be removed from relevant business and innovation cycles and also more beholden to entrenched businesses.
Average term length has continued to rise as well. (see http://www.fas.org/sgp/crs/misc/R41545.pdf page 6)
In 1949, a Senator on average served just 1 term (6 years), and a Representative served 3 terms (6 years).
Now, in 2013, a Senator serves nearly two terms (12 years), and a Representative serves nearly 5 terms (10 years).
Also, your numbers are for House Representatives, not congressmen.
drives home meaning of "conservatism" :)
Sadly, even if "veterans" like Dorsey, Page, Brin were to run for federal office, they would be amongst the youngest to serve.
Even if you arbitrarily want to restrict your scope to Googlers: Peter Norvig, Rob Pike, and Ken Thompson are decent examples of veteran technologists who've seen a few changes of both technical and business environments, and have some basis for comparison. Brin, Zuckerberg, and Page don't really have that kind of experience.
I was more or less trying to draw the distinction that in some fields, sports, entertainment, and at least some technology enterprises youth wins out. Recently it was determined that by industry, technology is one of the "youngest" industries with an average ago of 30. That puts tech close to retail and food service.
I think it was Forbes, I can't find the link though.
Look at the federal level, where the average age of a Rep is 59 and Sen is 63. These are folks who not only don't empathize with modern technology, they've got established connections to big industries that are threatened by innovation.
I'm not meaning to come off like a ideologue, it's just economics and incentives. Until younger folks get more involved, it likely won't improve much. (like SOPA/PIPA, but more consistent in advocacy and running for office).
Clinton ran for congress in his 20's, lost, but was elected Governor in his early 30's. Joe Biden was a U.S. Senator at the age of 30. People in their late 20's and early 30's just aren't positioned to run for office in our generation. Debt, schooling, careers, etc prevent many from being able to do it, even if they wanted to.