To pierce into an already saturated market that is streaming
you either need to be very good at something , high level player of a game, and mass spam this game
OR
play the right game at the right time.
Some streamers out there that were no one before a specific game came along, a new hyped game comes out, big streamer plays it, got all the viewage, then they all go off to sleep, which leaves 10-15k viewers looking for a channel to watch the new hyped game late at night, they may come onto your channel, and you gotta grasp that opportunity.
So playing the right game at the right time is a potential win condition to become a successful streamer
from then on, its you, your personality, being pleasant, entertaining, making sure they hit that follow, come back, and eventually sub to you
This is my tip to anyone who wants to live from streaming.