It's even stronger now than it was in 2013/14/ and 15. It's still the best directly aim-based FPS competitive game.
Advertisement revenue, player salaries, prize money, etc, it's all 1000% better than in the startup CSGO and even 1.6 years. Yet, CS has persevered for two decades as the top FPS game.
If you knew the history of CS1.6, major orgs in the 2000s used to drop complete rosters quite a bit. They'd go from American rosters to Dane rosters to mix rosters to a German roster, etc. It's pretty popular in CSGO - given it's a team-based FPS game with very key roles to fulfill.
SK Gaming, Titans, Dignitas, Fnatic, Evil Geniuses, etc.
EG, for example, had 3 Canadian rosters, an American roster, and even supported a mix roster of Canadians, Americans, and Lurppis - a Finn player. Their final roster (before disbanding due to being forced out by other orgs - due to EG having ties with Twitch at the time and other orgs calling it a conflict of interest), was very successful from 2008-11.
This too, shall pass. C9 will bounce back - eventually. They just won a major 17 months ago. Yet, they competed for 3.5 years prior. They'll compete for 3.5 years after. They just, literally, have nothing viable to work with on this roster. When they had n0thing, shroud, sean, ska, etc. Did you not see how well those guys meshed? They were best friends and competed together.
C9 is the largest and wealthiest esports org in the world. They have high salaries and are backed by a very involved owner. Since they had such great success in the scene, they will surely continue with it and perhaps drop the whole roster and then move forward.
They literally just piled a bunch of decent players together for this roster, who probably aren't even close outside the server. I don't see the same bromancing that existed before. If they start seeing this more as just work and less passion involved, they won't be as successful. I'm a firm believer in persistently strong lineups. The high turnover rate in teams disappoints me. It makes this seem a lot less professional. This is one binding factor that made VP so successful in the time they had. Their roster had been together for many years and then when it couldn't function any longer, they disbanded.
Vitality is doing it right. ZywOo could get any team he sets hit eyes on. He remains loyal to a functional roster and they have had a VERY successful 2019, so far. Keeping the roster consistent all year has been a major motivator. Even having a British lad in an all-French roster is a bit of an enigma in terms of the French scene - which has historically been quite regional. I'm not sure how well Alex speaks French, but, whatever they do works for them right now.
I could only see them keeping autimatic and rebuilding at this point.