Your personal info becomes public because it's attached to the business information. This can include phone numbers, emails, full names, home addresses etc. All accessible online by anyone, including spammers, scammers, swatters etc.
Well, the problem is all the bad actors. Why don't you post your full name, home address, email address, and phone number right here? You "do business" too, right?
Should everyone in the world then be able to have access to the information I mentioned just because you work for someone?