I think the biggest issue for me is the fact that I have to work with people who should have been fired a long time ago instead of some co-founders that know how to execute. Working at a company that has never had a lean year can be very frustrating, people can have little motivation outside of CYA and a paycheck, it's the lack of desire to build something focused and exciting and to push back against bad ideas. This is not every large corporation, but it is many.