As a more concrete example, if we paid only for what we used, there would be no interstate highway systems.
I-90 in MA is funded entirely by tolls, leasing, development of land and air rights, and advertising. http://www.massturnpike.com/aboutus/index.html
Although the nominal corporate tax rate is not that low, the actual (average) taxes paid by corporations is quite low compared to other developed countries because of the convoluted tax breaks written into the law.
Citation please. I'd like to see an example of a US company legally pay less than 20% on income of at least 10 million in profits.
I'll use Intel as an example, since they post excellent reports and are a large multinational corporation. http://www.intc.com/intelAR2008/financial/statements/note23/index.html Notice their effective rate of between 28% and 31%(make sure to read about the 24%). Amazing that the government gives them tax credits to do R&D and manufacturing locally. You'd think that they'd just lower the tax rate.
Is that low compared to other nations? This data says no: http://www.kpmg.com/SiteCollectionDocuments/Corporate-and-Indirect-Tax-Rate-Survey-2008v2.pdf The average rate in 2008 is 25.9%. In fact Intel's effective rate is higher than over 70% of other nations including the entire EU which has been lowering corporate taxes over the past decade.
You may want to consider schematic entry if your design is simple enough. At the very least, look at the floorplan of your synthesized designs so you can how much logic it took for each module.
1 + 1 = 3, for large values of 1.