I thought the "conventional wisdom" was that until the JJverse film cycle is complete, CBS shouldn't risk rocking the boat by licensing any new series from anybody, lest the series go south, give the Star Trek brand a bad rep, and hamper the most certain cash stream the franchise has seen in years.
Also, sci-fi shows are more expensive; doesn't that mean they are inherently riskier than other, less FX-laden shows (more "conventional wisdom")?
Nope, that's totally wrong. CBS doesn't care about producing a Trek series that runs concurrent with a movie series, because CBS and Paramount are two different entities. The reason why CBS isn't producing a Trek series is because they simply don't want to or need to. They're too busy producing shows that people are actually watching. If they thought shitloads of people would watch a sci-fi show, they'd produce one, no matter what the budget was, or if some film was out with the exact same content. But they don't think that.