Many say that it will show its growth and will be one of the most promising coins. But for a very long time, nothing has happened. Personally, I do not believe in this coin, I believe in others.
Nothing happen because of the market conditions, which coin did big things in 2018, there is almost any coin which could get good profit in 2018 because we are still in bear market, after bear we can talk about iota again.
Yeah, it's hard to think that when IOTA is a made standard that the market won't realize that billions of IOT devices will likely be using it.