Vine had its audience back then, they had 200 million users at some point. Vine 2.0, Byte reached over 1 million downloads in three days. The potential is there, but they have a long way to go. TikTok has over 1.5 billion downloads and if was downloaded ~10 times more this weekend than Byte. TikTok is a Chinese company, some people might not like that, probably there are more, who don't care and there are even more, who don't know. They don't necessarily compete for the same audience either and even if they do to an extent, just take a look at how Twitch became popular in the shadow of the giant, Youtube, by beating them in their own game. We'll see.