> The decision only applies to corporations where it's owners are indistinguishable from the business itself.

If the owners are indistinguishable from the corporation itself, its not a really a bona fide corporation -- the entire premise of the corporate liability shield, the easier deductibility of corporate expenditures, and the existence of corporations as distinct legal persons is that the whole idea of a corporation is that it is a creature of law -- of government -- distinct from its stockholders governed by a government-approved charter.