The Anglophone trade fiction industry has serious structural issues when it comes to publishing translated works from other languages. Firstly, a lot of readers (and store book buyers) have a "not invented here" problem with foreign authors. Secondly, names that are unfamiliar: difficult. Names that are hard to pronounce: also difficult. (I know one Serbian author who uses a pseudonym specifically because her surname is hard for Americans and Brits to pronounce.) Thirdly: before an editor can decide to acquire and push a title out to marketing they have to read it; this entails at a minimum a bilingual editor in the language in question, or a budget to pay a translator for a three chapter extract and synopsis. Then, if they go with the book, they have the added overhead of commissioning a full translation and, hopefully, getting someone else who's fluent in the source language to sanity-check it. All in all, this costs thousands of dollars -- and there's so much adequate material already available in the vernacular that most editors don't bother. It takes someone with a real sense of mission to put the effort in -- or an author who's willing to pay a translator up-front on spec in hope of selling.

Little-known fact: Finnish SF author Hannu Rajaniemi writes in English. Indeed, his novel "The Quantum Thief" was translated into Finnish by someone else (and made it to #2 in the "foreign translated fiction" bestseller charts in Helsinki).