Isn’t this SOP for A/A from CC issuers?
Yes and No.
If a bank feels like you're abusing your personal cards then certainly your biz cards may also be at risk during a shutdown (or vice versa).
But I don't recall any recent widespread situations where a bank approved people for small biz cards, then shortly thereafter asked for lots of paperwork/documentation, and proceeded to freeze (and likely shutdown) ALL of said customer's accounts when they failed to provide satisfactory documentation.
Wouldn't a bank want to verify all the business paperwork/documentation PRIOR to approving people for new cards.
To some degree it feels like Cap1 set a honeypot trap for people by dangling a huge CC SUB...seeing who signed up...then saying "Gotcha!"
That being said, I understand the obvious counter-point is for someone to say: "if you didn't lie on your Spark application then you have nothing to fear"