And even then, it's not like Bain and Romney were the kind of corporate raiders like the Richard Gere character in "Pretty Woman."
The WSJ has a more fair assessment here. Their model at the time when they started out was risk, but high reward. Much of the time, they entered at the company's request when it was already struggling. In some businesses, the investment didn't work out and both the company and Bain lost $. Nothing's perfect. But on what they were successful with, they were successful. And they didn't stick around investing good money after bad in situations they couldn't help --- a business sense that either Obama never learned, or isn't styled with his politics.
WSJ | Romney at Bain: Big Gains, Some Busts
And, as the article states, in many cases, the business experienced trouble years after Bain's relationship with them ended, with many of them happening in the 2000-2001 downturn.