What it boils down to is that frame rate becomes a creative choice.
It doesn't "become" a creative choice; it has always been a creative choice ever since you had the choice. You choose your frame rate because it's artistically appropriate, and for no other reason.
And it could very well be true that even with fast action 60 frames per second could generate an undesirable live look.
"Undesirable" depends on your purposes. But it definitely WILL generate a live look.
There's no reason to "bet" for the future. All of the frame rates will remain available; you pick the one which is artistically appropriate for your project.
As far as the future is concerned it does not matter which format is popular today but which format will preserve the film look while at the same time preserving a reasonable amount of motion fidelity?
The "future" will not change the "soap opera" effect of a fast frame rate. That's what a fast frame rate gives you. It's what it will always give you. You cannot have a fast frame rate without the "live" look unless nothing moves, and usually not even then. It's the very nature of a fast frame rate. If you use it, it's what you'll get.
I'm almost finished with my hour-long instructional on frame rates; all of this is explained and demonstrated in it.