Rockstar is one of the video game industry's most celebrated studios, famous for Grand Theft Auto, Red Dead Redemption, and other huge franchises. Few other developers command the same hype, and the unprecedented success of GTA V has made the long wait for GTA 6 even more painful for fans.
GTA Online was the best part of V (the campaign is just meh, especially compared to IV and San Andreas) so as long as they don't make it too grind-y (and actually give solo players something fun to do in free mode) then I'm sure it'll turn out fine.
What do you like about online? Because honestly I have never been able to accomplish anything because some asshole frags me before I have time to pick a lock or look at my map real quick. It gets super boring. I wish they added mechanics where fragging other players became a more risky thing to do. Like your a police informant for a while and if someone kills you they automatically get four stars. Or I wish they focused more on stealing from other's business. So you need to put more work into defense.
Idk, maybe those things exist once you get some money. But it's nearly impossible to progress in the game as a noob without friends in the same server.