It is not highly legally debatable. Debatable, maybe. Highly? I highly doubt that.
> no more legal rights than the gold you earn in World of Warcraft
Undoubtedly, if a company offered some sort of account to store that gold, they'd be in deep shit if they took gold from those accounts and sold it to pocket the money.
It doesn't matter if it's cryptocurrency, collectible, stock, etc, it still is not a business asset.
If you've got my Jesus shaped collectable potato chips in storage you can't sell them to keep your business afloat.
If you're a brokerage whom I have an account with for my stocks or asset trading, you can't sell my assets to keep your business afloat.
If you're a bank storing my currency, there are very specific rules that govern you, and my money is FDIC insured. This isn't a bank, period.
You can't just change the rules saying "well, banks don't always have your cash on hand, so this guy doesn't have to either". There are rules around how all of that works anyways - and he wasn't operating within them.
This is more akin to paypal, or some type of digital wallet. As it's an "account" where you can "send and receive dogecoins". There is no reasonable expectation that anyone else should have access to the dogecoins in your account.
There's weird grey area around that shit, but suffice to say my assets are NOT your business assets.