Team games also relieve "ladder anxiety".
Ryan Schutter, lead UI designer for StarCraf 2 | 10 years anniversary interview;
https://www.usgamer.net/articles/starcraft-2-anniversary-interview-blizzard
From a publisher's point of view, Co-op is lucrative in that it allows for deeper monetization with MTX and not just cosmetics. As PVP oriented pay-to-win MTX becomes 'pay-to-help' your team (NPC game environment).
The potential of CoH team games is far superior to any other RTS games except maybe dead IPs such as World In Conflict that had unique team play design.
The 1vs1 audience will never be the future of CoH.
Why should Sega even bother trying to compete against SC2 1vs1 when future CoH games can make more money from team players and co-ops.
I'm not saying CoH3 can't build a larger 1vs1 audience, but fans need to know they are fighting an uphill battle.
i wish people would realize how stupid is modelling a game after 1v1.