Interchangeable lens shooters such as the Sony A9 are evidence that mirrorless cameras can not only compete at the highest levels of photography, but they're probably also the eventual successors to DSLRs. So you'd assume that a company like Canon would have made strong inroads into the mirrorless market by now. But with cameras like the new EOS M100, the company is still treating the mirrorless market as an afterthought, not the future.