Most companies with their own launchers attract people to them with exclusive titles (their own games) and they probably don't lose thaaat much revenue. EA has a bunch of properties, Blizzard has a bunch, Epic Games has Fortnite, and so on. However, EA did recently decided to release their games on Steam again, I think they've probably negotiated a better profit-sharing agreement (most big companies can do this), although it still just launches their own game launcher. It doesn't really seem like the paradigm of Steam as industry leader and other launchers just... existing, is going anywhere. Having annoying launchers probably isn't going to lose them many sales, although with GTAV and RDR2, the Rockstar launcher is infuriatingly bad and might lose some sales.
Most companies with their own launchers attract people to them with exclusive titles (their own games) and they probably don't lose thaaat much revenue. EA has a bunch of properties, Blizzard has a bunch, Epic Games has Fortnite, and so on. However, EA did recently decided to release their games on Steam again, I think they've probably negotiated a better profit-sharing agreement (most big companies can do this), although it still just launches their own game launcher. It doesn't really seem like the paradigm of Steam as industry leader and other launchers just... existing, is going anywhere. Having annoying launchers probably isn't going to lose them many sales, although with GTAV and RDR2, the Rockstar launcher is infuriatingly bad and might lose some sales.