The video is 6 years old. I promise you that the place is either already clear, or the owner wants unrealistic prices for the equipment. It is more likely that the place was clear within a week or two of that video being shot.
And actually, you don't even NEED to be the guy who makes the finds. Just knowing the guys who make the finds is usually more than enough. I have never been to a warehouse raid in my life. But I had buddies who made the finds. The fact is that their wives were not going to let them bring home 90 games. Buddies who make the finds can be almost as good, and they usually end up doing all the legwork. Sure, you might end up bringing home a Space War instead of a Star Wars, but Space War was a pretty sweet game.
Back when I was really into collecting my various collector buddies of the finding type located lots of games for me. As often as not the serious collector guys don't have the room for everything they find. There are about 400 different classic era games worth owning, and almost no one has the room to actually have all of them.
So when the serious collectors make finds they have to prioritize. Just being an acquaintance can really help out. They might only be able to swing taking home one game, but they FOUND a Speed Freak, a Pooyan, and a Turbo. They will probably grab the Speed Freak, but they don't want the Pooyan and the Turbo just to sit there, so they will pass them on to their friends. I have even got phone calls that went like this "Hey Paige, this is John, I'm in this place, no, no, you don't need to come down here (John is guarding his source), but they have (list of 20 games), and the guy wants $75 each for them, I have room on my truck for one more, what do you want? You can meet me at my work tomorrow to pick it up.".
See, in the example given John set me up with something. He guarded his source because he wanted to sneak as many games under the wife's radar as he could. He knew that I was a crazy bachelor, and if he just gave his source away then I would go get ALL OF THEM, but he still let me in on the action.
My god there were HUNDREDS of games...dozens of pinballs, pool tables, parts, equipment. What in the hell was the purpose of that warehouse? I mean ---Cleveland steamer---, all the dust on everything...did the owner just die or something? I'd LOVE more info on this "warehouse"...hell, i've NEVER been to a working arcade that was that huge...