This is another take on how bad this ruling is by poking a hole in the "corporate veil."

This gets complicated, but bear with us. Basically, what you need to know is that if you and some friends start a company that makes a lot of money, you'll be rich, but if it incurs a lot of debt and fails, you won't be left to pay its bills. The Supreme Court affirmed this arrangement in a 2001 case, Cedric Kushner Promotions vs. Don King:

linguistically speaking, the employee and the corporation are different “persons,” even where the employee is the corporation’s sole owner. After all, incorporation’s basic purpose is to create a distinct legal entity, with legal rights, obligations, powers, and privileges different from those of the natural individuals who created it, who own it, or whom it employs.

That separation is what legal and business scholars call the "corporate veil," and it's fundamental to the entire operation. Now, thanks to the Hobby Lobby case, it's in question. By letting Hobby Lobby's owners assert their personal religious rights over an entire corporation, the Supreme Court has poked a major hole in the veil. In other words, if a company is not truly separate from its owners, the owners could be made responsible for its debts and other burdens.