Who owns most of the Alps?

Could you please clarify who exactly owns the majority of the Alps? Is it a single entity, a group of individuals, or perhaps a collective of nations? Are there any specific regions or peaks within the Alps that have different ownership structures? Additionally, are there any legal or historical factors that have influenced the ownership of the Alps over time? Understanding the ownership of such a vast and iconic mountain range is certainly intriguing, and I'd appreciate any insights you can provide.