I can't believe this many people think its so common for a major publisher to go under they are placing bets on the next one to do it. Do you realize how monumentally profound of an issue it was the THQ did at all? That was not normal for them to flare out like they did. Granted some of it was their own fault (word is, they supposedly turned down many buy-out offers prior to the end because they were holding out, possibly so they could intentionally chapter 11 to wipe out their debt, then sell to a holding company mande of the same owners). But in any case, things like that are not normal for large scale publishers. A small dev studio? Sure those things flare out a dim a dozen, relatively speaking, a big publisher though is a whole 'nother story.
Some things you need to think about is, it has no direct relevance to how well the company is perceived by gamers, or how "good" the games are. It is much, MUCH more complex than that. Also, big publishers like EA, Activision, Ubisoft, and Sega, they all have cash in the bank that EXCEEDS their total market-cap value. What that means is they have more in their savings account than they are worth, so to speak. This means two things... one, they can bleed dry for nearly a decade before they fold, and B, no one could initiate an agressive buyout unwillingly against them to eat them up unless they wanted to. These guys aren't going anywhere any time soon
On top of all of that, any normal publisher upon entering the dire situation similar to what THQ experienced, would begin to shop themselves around to someone else for a buyout. (Disney is really on the hunt for quality stuff right now, and Activision will never turn down a deal either). They would secure a buy out to an amenable agreement, and continue on... business as (relatively) usual under the new owners. Something like what we saw happen with THQ is a rare occurrence, and the result of a multitude of failing across the board I would not expect to see repeated for many years to come in this industry on the same scale.