Perhaps it's been said already, but even so I'm going to add my 2c.
The video Lift is, in my humble opinion, basically a metaphor for the loneliness life can instill in us unless we meet other who have the same ideas and visions as we do. Marko is alone, being interrogated and judged by five (I'm pretty sure it's 5) people, who can be said to represent the faces of common society: The Beautiful Woman of 'pretty people' culture, the old man of the 'Stragglers of Yester-generation" etc, etc. I don't think you see all of them in the video, but that is what it meant to me.
He sings about how he wants to meet someone, anyone, who can 'lift' him from this fate of being alone in what he sees and thinks (the moth). The hand gestures of the moth he makes to the people who cannot see them, from the perspective of the viewer, it looks so obvious that the inkblot is a moth, as we are meant to be on the side of Marko. At the very end it changes, to show us what everyone else sees, and made us question how it could possibly not be a moth, as Marko is.
The inkblot is a representation of life and how every situation can have millions of different interpretations and thoughts. It is a hard realization, and a difficult time, when you find yourself alone among your peers as the only one who thinks the way that you do.
However, the feeling you get when you finally meet someone who shares your vision is nothing short of incredible. This does not have to be love, though it obviously can be. Lift is the only word that can describe what you feel like when you meet the ones who share your vision.
The moth itself represents the struggle of a mind to find others who think the same way, and in the 2nd room we see hundreds of moths, all flapping their wings, trying to break free of the loneliness. The video does not end well for Marko, he finds no sympathy in the interrogators, and his moth, finding no partners to coexist with, returns dejectedly to his hands after experiencing its brief flight, which symbolized the desperate outcry of Marko for someone who thinks the same way.
At least that's what it meant to me