How many companies are out of business today, making activation of their games impossible? I'm not being facetious, I'd like to know if there are any cases out there.
Also, the Sony thing was messed up, but it still only meant three weeks without the game. It went longer than I think anyone could have expected, but the service was never close to being shut down for good.
It's like being paranoid about keeping money in the bank. They are too big to fail today, so it isn't worth stressing about it.