Luke refusing to go with Obi-Wan is Luke making an active decision, albeit one that embraces the status quo. The death of his aunt and uncle force another choice on Luke.

He can stay [and most likely die], or go with Obi-Wan. Arguably, staying is the tougher option – he’ll be alone, knowing the stormtroopers might well return at any time. Going with Obi-Wan is dangerous, but at least he has the safety of numbers around him…

There’s another kind of protagonist you didn’t mention: the character who doesn’t change or learn, but who is an agent of change. Aside from ill-fated romantic entanglements in Casino Royale and OHMSS, James Bond rarely changes – but he changes others. [Usually the female associate of the villain, and she almost always ends up dead for helping Bond.] Indiana Jones doesn’t change much, either.

The alternative agent of change is a protagonist that changes the audience. For example, the protagonist in The Hurt Locker is [I would argue] the same from start to finish. The audience learns about different facets of the protagonist and our attitude to him changes – but he remains the same.

Are agent of change protagonists passive? Not really. Indeed, they’re a staple of action-adventure movies. I would tend to put the incarnation of Rocky seen in Rocky Balboa into the agent of change category. He doesn’t change, but he effects change in his son, and Little Marie, and in her son.

For all of this, your mileage may vary!