A lot of times, the more simple a solution is to use, the more complex it is to implement. So things are biased toward accidental complexity.(i.e. Over-complex

A lot of times, the more simple a solution is to use, the more complex it is to implement. So things are biased toward accidental complexity.(i.e. Over-complexification). That and people adding subjective beliefs in their solutions. That's also why the space keeps evolving.