The bigger problems I see here are:
1. You can't really sure large corporations like Bricks & Minifigs. They've got deeper pockets and can drag it out until you go bankrupt. There's no good legal recourse for this, meaning larger corporations can basically do whatever they want and ignore the law, as long as they only hurt people smaller than them.
2. The police refuses to treat this as the theft it is. There have been several confrontations with police that give a very strong impression that the police is corrupt and protecting the Bricks & Minifigs and its crimes.
3. Reckless Ben's questionable shenanigans seem to be the only way to fight for justice in unequal situations like this. The offending franchise is now closed. The victim still doesn't have his lego or money back, but thanks to Ben, Bricks & Minifigs is now also feeling the pain. Without that, they would have simply gotten away with it. Chance are they've done stuff like this before.
Also interesting are some of the stunts Ben has pulled:
1. Confronted with the claim that it's a civil matter, he tried turning it into a crime, by holding a raffle for one of the stolen sets that's still legally owned by the victim. The winner of the raffle went to pick it up, and was refused, making it theft from a lottery, which is a crime that the police is supposedly required to investigate (they didn't).
2. Several people buy $10k worth of lego from the victim and claim it from the shop. When they're refused, they go to small claims court, which is now possible because it's only $10k. Bricks & Minifigs ignored it and closed the shop instead. There are default judgements in favour of the people helping the victim, but there doesn't seem to be any way to enforce them.
3. He went out of his way to get the company to sue him, which is apparently better than him suing the company? I'm not sure why. But Bricks & Minifigs didn't bite.
The most effective thing has simply been the PR. The public attention may finally get law enforcement to investigate and punish Bricks & Minifigs. Or at least the broader public will know and avoid Bricks & Minifigs, so at least the company gets punished financially. That won't help the victim, but at least it would be some measure of justice.