Yes. Or rather, if you're going to launder money, make sure you're making healthy campaign contributions, hiring ex-politicians and their staffers as lobbyists, oiling the great lobbying machine, etc...
For those who haven't read it, Lessig has written a rather nice book on exactly how this kind of "soft corruption" works: http://www.amazon.com/Republic-Lost-Money-Corrupts-Congress/...
To your point, you're right that restricting money is often worse for challengers than incumbents. This is because the challengers need to spend money to get their name out and prove they're "serious" as opposed to the incumbents who already have name recognition and can get attention without spending money. However, the issue that he's talking about is different (though related). The problem is that both incumbents and challengers require some small subset of people to support them and fund them.
http://www.amazon.com/Republic-Lost-Money-Corrupts-Congress/...
http://www.amazon.com/Republic-Lost-Money-Corrupts-Congress/...
http://www.amazon.com/Republic-Lost-Money-Corrupts-Congress/...
I also found the Lawrence Lessig / Jack Abramoff interview very illuminating in understanding the corrupting influence of money on government. It's long but worth watching: http://www.youtube.com/watch?v=pkvIS5pZ0eI
http://www.amazon.com/Republic-Lost-Money-Corrupts-Congress/...
If you want to know what to do, a nice first step would be to buy and read Republic, Lost.
He includes a quote I found particularly compelling, especially in the light of Marco's link between 'the next SOPA' and campaign finance reform: For every one striking at the leaves of evil, there is one striking at the root. - Thoreau. Marco wants us to strike the root.
Book: http://www.amazon.com/Republic-Lost-Money-Corrupts-Congress/...
NYTimes review: http://www.nytimes.com/2011/12/15/books/republic-lost-campai...
If one follows the news, there are constant reminders of this kind of lobbying going on (corporations asking for special treatment, especially when it comes to taxes) for a whole century. Besides a lot of this is done right out in the open. I mean coorporate lobbying was invented exactly for that -- to push governments for favorable laws, special treatment, laxer environmental and other protections, etc. On top of that, there are all kinds of under-the-table deals (with lots of them exposed frequently) with politicians and corporations.
That said, here are some pointers to the issue. First the general Wikipedia article:
A number of published studies showed lobbying expenditures can yield great financial returns. For example, a study of the 50 firms that spent the most on lobbying relative to their assets compared their financial performance against that of the S&P 500 in the stock market concluded that spending on lobbying was a "spectacular investment" yielding "blistering" returns comparable to a high-flying hedge fund, even despite the financial downturn of the past few years. A 2011 meta-analysis of previous research findings found a positive correlation between corporate political activity and firm performance. Finally, a 2009 study found that lobbying brought a substantial return on investment, as much as 22,000% in some cases. https://en.wikipedia.org/wiki/Lobbying#United_States
And the US specific one: https://en.wikipedia.org/wiki/Lobbying_in_the_United_States
The Atlantic: http://www.theatlantic.com/business/archive/2015/04/how-corp...
The Guardian: http://www.theguardian.com/politics/2014/mar/12/lobbying-10-...
National Review: http://www.nationalreview.com/article/421664/corporate-lobby...
Fortune: http://fortune.com/2015/09/04/lobbying-corporate-washington/
Economist: http://www.economist.com/node/21553020
Forbes: http://www.forbes.com/sites/chrisbarth/2011/12/14/29-compani...
Oxford University Press: http://www.amazon.com/The-Business-America-Lobbying-Corporat...
Lawrence Lessig: http://www.amazon.com/Republic-Lost-Money-Corrupts-Congress/...
The Influence Machine: The Influence Machine: The U.S. Chamber of Commerce and the Corporate Capture of American Life
Lobbying America: http://www.amazon.com/Lobbying-America-Politics-Business-Twe...
And those are "establishment" sources -- you'd get far better coverage in more outspoken and critical voices.
Regarding Apple in particular: http://www.theguardian.com/business/2015/jan/21/us-tech-tax-...
http://www.theguardian.com/technology/2014/sep/30/apple-repa...