David Frum: The Rich Are Different From You Or Me

Isn't David Frum supposed to be one of the better right-wing thinkers? Then how come he's going on MarketPlace to make arguments like this:

One reason that higher rates do so much harm: Very rich people have a lot of economic options. If income tax rates rise too high, they will invest time, energy and money to redesignate their income. If, for example, corporate tax rates are lower than personal, they'll hold income inside corporations. Or their accountants will invent ways to transform income into capital gains or to generate tax losses.

So, don't tax rich people 'cause they'll just come up with ways to avoid paying? That's his reasoning?

Boy, you'll get a lot of sympathy for an argument like that.