Overwatch is working on a system and a policy to hand over permanent ban to players who abandon competitive games. too often.
Blizzard Entertainment looks forward to making competitive mode very serious and only for players who want to play seriously. A recent post comment by Jeff Kaplan on Battle.net mentions the same:
The statement from Jeff Kalpan reads:
We’ll definitely take the idea into consideration. Our philosophy has been that we would rather not have leavers playing the game at all (especially in Competitive Play). We keep increasing the penalty for leaving and will continue to do so. We’re in the process of implementing a new policy which would take into account how many Competitive Seasons you have been banned from and at a certain point, prevent you from playing Competitive ever again.
Overwatch has seen a massive growth in the past one year. The developers at Blizzard are also making it sure that competitive players stick to their game. A recent report published by Morgan Stanley suggested that the community will start creating opportunities for earnings of over $100 million /year in the coming years.