At the beginning one of Quadriga's products was an ATM that people could use to deposit cash and get BTC in return. It's just about plausible that they emptied the ATMs and took the money home occasionally.
What kind of business with ATMs "takes the money home"?
Even if it's totally legit, it's also totally insecure - they could be robbed at any time.
Money in such quantities are not takes to the home and stacked the kitchen top, they are deposited to banks - by armored guards in vans.
The kind where $200M of customers' money "goes missing" and the ceo "suddenly dies" on a holiday to a country famous for its scam artists?
Whereas the parent commented that "they might had simply taken the money from the ATMs home" as an excuse for them being a legit business while having stacks of cash on their kitchen tops.
Unbanked businesses? Some of them because they are illicit, but others exist because banks don’t want the association.
The issues at the beginning was use of non-standard sized bill receptors and non-digital vaults at the ATMs but that has been solved recently. At the time, we used two ideas: provide a regular ATM right next to the Bitcoin ATM to dispense bills out (so we'd get ACH) and regular pickups and drop-offs to a bank.
Definitely not ideal, but what else can they do?