I've worked in numerous Fortune 500's, and without a doubt the biggest piece missing from the dysfunctional teams is always accountability. Or lack of responsibility and ownership (said another way). The high performing teams don't tolerate excuses or abdication of responsibility. They may not come right out and say it explicitly, but between the lines of success, that's what's going on. If you're on a team that sucks, it's probably because no one cares about doing a good job.
There are many ways to increase accountability and responsibility, but sometimes people do need to lose their jobs. Trying hard is not sufficient when you're making six figures a year. Steve Jobs (I think) had the quote - "Somewhere between the janitor and the CEO, excuses stop mattering". In my world, that's once you start making 100% more money than the median. I've never seen a big organization that couldn't lose 25% of its people and not miss a beat. In some cases 50%.
Anyways, our culture has moved beyond responsibility and accountability. People joke about participation ribbons and "everyone gets a trophy" - but speaking generally, most of the younger employees I've encountered don't know what it takes to really succeed. They don't understand how hard you actually have to work to be better-than-competent at something. I know it sounds very "get off my lawn" - but the change (generalizing of course) is real enough.