There's nothing in the description that suggests it's limited to romantic love. The phrasing of certain sentences ("loved one") suggests it can be applied to any type.
RJ Savoy
However The Power of Friendship and The Power of Family are their own tropes. The Power of Love seems to be a sister trope, going by their descriptions, which would presumably make it about romantic love only. We could make a supertrope for all types of love (The Power Of Bonds?), but I'm not sure if it's needed.
Stories don't tell us monsters exist; we knew that already. They show us that monsters can be trademarked and milked for years.
FWIW, the fuzzy distinction from The Power of Love was discussed during
The Power of Family's TLP phase.
I have always read it like The Power of Friendship and The Power of Family are specific flavors of The Power of Love, but with more emphasis on those bonds rather than the raw emotion behind it.
If Alice's love for her dead dog brings the dog back to life, isn't that a non-Eros The Power of Love? Or, to take a concrete Harry Potter use:
- The protection you get from a person choosing to sacrifice themselves for you. Harry Potter has some measure of this protection because of his mother's actions before she was killed. But Harry then also does the same thing for his schoolmates during the Battle of Hogwarts. The former is familial, the latter is friendship, but both are explicitly powered by the sacrifice's love.
I think it depends on how the work in question treats it. Frozen made it very clear the family bond was specifically an Act of True Love / Power of Love thing.
Can it have more to do than romantic relationships? The Four Loves come to mind here. Like could love for family, friendships, and unconditional love be portrayed as a powerful force like the definition of The Power of Love states?
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