the biggest issue is, that steemit currently still is sort of niche and most of it's content also is. So the content that is growing strong on here will still be niche for quite some time, unless the users on here venture into sub- or off-topics.
Until then, I think the concept of steemit might be nice for normies, but looking at their success rate when they're at it trying it out would scare them away. I just guess that content might seem too irrelevant for the current group of users for them to get upvoted.