Falsely allocating dividends, using offshore tax accounts are what big companies are actively doing, and many getting away with it. And yes, these include your favorite tech companies and such. (http://www.ibtimes.com/articles/334737/20120429/apple-avoid-...)
The banking secrecy in some countries is the real enabler of tax evasion though - because corporations can simply fudge the numbers to reduce the tax bill.
Almost everything you wrote is false. Not all bonuses are income, they may or may not be taxed, they may or may not be subject to higher taxation than ordinary income. You have a very US-centric view of the world.
Distributing profit as dividends is "falsely allocating income" if you are not paying yourself a reasonable salary, to the extent that you have redirected salary income to dividend income. Once you do this, it is no longer up to you to decide what a "reasonable salary" is. The IRS (or the local tax authority, if not in the US) will decide that number.
Most forms of bonuses are income in: 1) the US, Canada, China, Australia, the UK, France, Spain, and India. There are various exceptions, but the general rule in the nations where most people conduct business is that bonuses are income. As income, bonuses are taxed at the same rate as income is ordinarily taxed in those nations. In some nations, certain types of bonuses are subject to a higher rate of tax than the ordinary income rates. If bonuses were not taxed, or were taxed at lower rates, most income would be paid out as bonuses.
Bonuses are income. They are taxed as ordinary income (or the equivalent of ordinary income in E.U. nations). Bonuses are not given lower rates; if anything, certain types of bonuses are subject to higher rates than ordinary income. Companies pay bonuses because bonuses are discretionary, while salaries are contractual. In other words, giving a bonus one year does not commit them to paying the bonus again the following year.