It's a consulting business with a design spirit. Clients are mostly big corporations with an oversaturated money-driven agenda, which is simply demotivating (you guessed it, fees are very high). Because projects change so much within a close timeframe, it's hard to get people to get to work on what they're good at (their specialties), so you end up with a lot of superficial work that doesn't transcend the client's needs.
Growing within the company is hard because you don't know how your performance is being assessed and measured. Feedback is not very clear when you get it, because there is a generalized fear of being too offensive. A lot of information gets discussed publicly and this leads to people taking things very personally. It's a stressful gig, overall.
***To whoever is reading this from outside Designit: All Designit offices are very different in their composition, client portfolio, layout, management practices, and culture. This feedback may apply to one part of the globe, but not others. This is in no way an accurate generalization of ALL the offices, but a single viewpoint.