Can Linux survive another 25 years?

Linux’s longevity is a testament to the open source community as a whole, and not just one man, such as Linus Torvalds. True, he invented the kernel back in 1991 and maintains it to this day, but if he didn’t have help along the way, it would have died long ago. Speaking of death, how much time does Linux have left to live? Some folks wonder if the kernel could meet its demise at the same time Torvalds does (or shortly thereafter). In other words, does the man have too much control with no real contingency plan?