From what I have seen, many workplaces these days, seem to be attempts to recreate the college experience (I went to a very rigid tech school, that did its best to recreate a work environment, so it wasn't a big deal, for me to enter the workforce). Not sure that's the best thing to do, but a lot of folks are making a lot of money, so I guess I'm just out of touch.
In Ye Olde Days, most companies were run by folks in their fifties. These people (the good ones, anyway) knew that they had to have the energy, enthusiasm, and creativity of youth, but were also quite aware of the need for structure, stability and confidence that only comes with experience.
Since older folks had the money and power, younger ones were forced to work with them. Now that youth has the money and power, it seems as if they don't feel the need to have older folks around.