There are some subtle effects with Comic Sans that don't get considered, even by big companies.
For example, my old phone was a Samsung Blackjack II running Windows Mobile. Ignoring the hassle of having to download the upgrade to WM as a zip file and read the instructions in some poorly written txt file, the installer on the actual phone used multicolored comic sans. It was displaying hex digits all over the place and pretty much providing me, the user with all kinds of information I didn't understand or need to know. I'm a technical person so I'm not as put off by this at most but the instant I saw 3 different colored bits of Comic Sans text, I worried about the trustworthiness of this upgrade system. It turned out to be right as it took me several hours to get working properly after nearly bricking my phone.
For example, my old phone was a Samsung Blackjack II running Windows Mobile. Ignoring the hassle of having to download the upgrade to WM as a zip file and read the instructions in some poorly written txt file, the installer on the actual phone used multicolored comic sans. It was displaying hex digits all over the place and pretty much providing me, the user with all kinds of information I didn't understand or need to know. I'm a technical person so I'm not as put off by this at most but the instant I saw 3 different colored bits of Comic Sans text, I worried about the trustworthiness of this upgrade system. It turned out to be right as it took me several hours to get working properly after nearly bricking my phone.