Businesses support vouchers as-is . . . why?

Carrie Lynch wonders what a conversation in a boardroom might sound like if the businessfolk ran their enterprise like the Milwaukee Parental Choice Program:

Employee: We'd like to spend more money on Project X.
Boss: How much more?
Employee: We don't know for sure. We'd just like to have an open line of credit and take as much out every year as we see fit.
Boss: I see. Is Product X selling well now?
Employee: We have no idea.
Boss: Ok, why not? What could go wrong with this?

Of course, I just gave away the punchline, but the whole post is worth a read. You really do have to wonder why business interests--who almost certainly do want better schools for Milwaukee's kids--would be so uncritically in favor of throwing money into a black hole of indeterminate quality.