How strict is OpenAI with account sharing? Perma ban? Warning? Pro subscription, 2 of 3 users only lightweight chat use

I'm hesitant but I'd be the main person using it for coding and Pro model usage. The other 2 are sort of doing me a favor by splitting the cost despite their lesser usage, entirely just basic chats mostly with non-Pro models.

I looked into alternatives but their Teams/Business option provides only 15 Pro model messages per month which is too little.

Only thing I worry about is just an outright ban + all my data gone and unretrievable. Is even a thing that's been documented happening?

Or are they likely flagging far more usage-hungry, higher user count people who share accounts?