I found this opinion article to be pretty interesting. It aims to please a general audience, and the claims it makes are very pointed and clear.
Overall, it suggests that lobbying by large scale, very wealthy companies are muddling the political process, and people are not being represented adequately. The grounds for this are example of how Google spent more than it's top 4 contributors in an effort to lobby against recent privacy and anti-trust laws.
The Board also uses major media corporations and how they are becoming and advocating less transparency.
This argument is very strong, but it oversimplifies the political process, and criminalizes all lobbying, but only details negative uses of it.
Also, the claim is that the public isn't represented, which I tend to agree with, however, the public elects their congresspersons in a fairly simple manner, and if the public thinks that an elected official isn't taking into account their constituencies interests, they have all resources at their disposable to recall or elect someone else into their place.