You are highly mistaken in what a video game roleplay is. They are a choose your own adventure book, with on the rails stories, and a host of activities to distract you from the fact that your decisions were mapped out ahead of time, and you are only being allowed to choose what path you go down.
In RPG's you have more freedom, sure, but lets not pretend that there isn't a fundamental difference between tabletop games and role playing video games. You can't negotiate with the leader of the campaign for your character to fit in the story, nor can you have any sort of dialouge about the plot. ITs preset, these are your choices, follow them or do not play.
I completely disagree. Yes, from the player's perspective the games are very different, but they shouldn't be different from the character's perspective, and that's where I think these modern CRPgs are failing.
All gameplay in a roleplaying game occurs from an in-character perspective. Literally everything that happens, from level-up to inventory management to exploration to dialogue.
If the player compares multiple playthroughs, differences will appear, but as those differences are invisible from an in-character perspective, they are not relevant to roleplaying.
One thing I do like about the Choose Your Own Adventure comparison, however, is that those books didn't have winning or losing conditions unless the reader invented them. Just like roleplaying games.
But I dislike the comparison because it suggests that the narrative in an RPG has defined end points. And it doesn't. The authored narrative does, but the authored narrative is merely background for your roleplaying. It's an important part of the setting, much like the combat mechanics, but the story arises from player choices. Also, there are many gaps in the authored narrative for the player to fill. A game like DA2 leaves many fewer gaps than a game like BG does, but they're still there. Does the Bhaalspawn follow Gorion's advice and head to the Friendly Arm Inn? That question is modeled by the game. But the motive for that is not. That's a gap. Why was the hero of Neverwinter enrolled in the Neverwinter Academy? What was his primary objective during the search for the Waterdhavian creatures? Why did Revan believe he was on the Endar Spire? How did the Warden interpret Alistair's deference to him? Why did Hawke go to Kirkwall? There's your story.