Maybe most owners start dipping into their own product and can't manage the business as well.
Also, they could maybe harbor a ton of runaways or have people wanting payment under the table.
I just imagine that the business can get shady really quickly and it may not be easy to balance what you want to let in just cause they have a dollar.
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Warning: Sometimes biased
https://imgur.com/V0x5fw8 https://imgur.com/IOovUge https://imgur.com/zw7bqPH