Things suffer in the dark longer than they suffer in the light.
HP/IBM/BMC web interfaces for (intranet) products sold _this year_ would be laughed off the public web in five seconds (really bad frames, client-side Java applets, etc).
(Not to mention the poor organizations buying this stuff tend to have it for about 5 years post-purchase.)
That said, the dynamic is changing. Enterprise software/IT is getting consumerized. Sometimes unofficially (everybody uses their ipad at work, but gets/expects no help), sometimes officially (Google Apps has been adopted by some big organizations. Its enterprise product is slightly different from the consumer Google apps, but it's really dang close.)
Big business aside, I believe about 10 million students use Google Apps as their official collab/email tool (not counting people's personal accounts. And Google adds a few big schools every month.). These students simply won't arrive at their jobs post-graduation willing to use Lotus Notes + .doc attachments.
Younger workers aren't the only thing leading to the consumerization of IT, there's a lot of influence coming from the Internet, and consumer hardware.
I don't want to hijack the thread, feel free to crawl my profile to find other places where I write about this stuff. Consumerization of old-school IT is my new pet area of research.