I'm a 39 year old Senior Software Engineer. My BS in Computer Science has done much more for me, obviously. In fact, sometimes I forget that I have an MBA until someone corrects me when I fail to mention having a Master's degree, or calls me out for saying something derogatory about people with MBAs :)
And yes, these people didn't go to stanford, harverd or any top tier business school.
Many of the executive producers and product managers I knew at gaming companies had to leave the bay area in order to find jobs in that industry, some of them are still unemployed after a couple years. some of them (especially the high level ones) start their own "consulting business" to prevent their linkedIn from looking like they're unemployed. everything looks great from the surface and they don't show up on statistics as unemployed, but things aren't rosy.