I think that you are being too reductive in terms of defining what a cutscene is. yes, in a P&P RPG things are different, because that's interactive - the distinction is drawn between JRPGs and WRPGs, where in the latter conversations often are interactive, and you can choose how your character responds.
The fact that you have to goad the game into continuing makes no difference. In P&P terms, it would be like you, the DM, giving your players a script that they have to read from. Yes, they are still technically interacting in a sense, but they are not in control of the situation and in no way are building their characters for themselves. JRPG cutscenes are like this - it builds characters, yes, but that doesn't make them interactive. They're still scripted, down to the smallest detail.
A cutscene need not be an FMV to be a cutscene. It is not a matter of perspective. It is being reminded that you are not shaping the story yoruself - you are not playing the game.
In that sense, the conversation between Edge and Rubicante is exactly the same in the SNES and DS versions of FFIV. The only difference is voice acting.







