rooted是什么意思？

Although Kodak anticipated the inevitable rise of digital photography, its corporate（企业的） culture was too rooted in the successes of the past for it to make the clean break necessary to fully embrace the future.

Twitter's huge success is rooted in the simple but profound insight that in a medium with infinite space for self-expression, the most interesting thing we can do is restrict ourselves to 140 characters.

Part of the answer is that this is what always happens during periods of high unemployment—in part because experts and analysts believe that declaring the problem deeply rooted, with no easy answers, makes them sound serious.