Yes, grind is very important. I first heard it from Gary Vee. I am sure more and more youtubers/streamers will join steemit/Dtube/Dlive and we will have to say good bye to youtube.
We are doing more than million transactions on steemit everyday and that is only the 0.14 per cent of what steemit can totally handle. So it is evident there is plenty of groth room for steemit.