Yes, it would be hard to name a major computer industry company which wasn't boneheaded in those days. It wasn't so much that Commodore made bigger mistakes, more that the industry turned against them and preferred to bet on other horses.
Dell pretty much did everything right, there's really not any stories of anything that went wrong for that company. Although they weren't really innovating and developing a platform, just making (really good) clones of someone else's.
