Another example: After Will Robinson, Dr Z, Gary Coleman's Character on Buck Rogers, Adric, Wesley Crusher, and mAnkin Skywalker the 'suits' still don't get that the public hates boy genius sidekicks!
But most of those shows and movies were quite successful in pure suit-bottom-line terms for at least a while, no matter how much we discerning fen

know those elements are crap... so the lesson the suits draw from that is not going to be the same as the lesson for us. They'll look and see a fickle audience and limited crossover appeal to the mundanes ... The appeal of a core potentially-faithful audience is what draws them to try sf/f, particularly in the cable world where acceptable ratings are lower than the old-school networks, but the difficulty of most sf/f to translate into the Holy Grail mainstream appeal of a Trek/Tolkien/Potter vibe is what also drives them away in most cases.
Which is why they ride it as long as it works and drop it like antimatter when it fades, just as they do with everything else.
I don't think the suits treat sf/f any differently than they do anything else. We just care and pay attention in this case.