I'm devastated.
I've owned virtually every Nexus/Pixel phone, and have been an android user for 10 years. When I purchased my original Motorola Droid (after standing in line outside the Verizon store in 2009) I also decided to pay for gmail via (what was then branded) Google Apps for your Domain, under the assumption that if you're paying for it, you have more control, you can move the email address away from the custom domain, etc.
I've been nothing but happy with it for 10+ years. Sure, every now and then some newly-launched google product wouldn't quite integrate well, but especially over the past 5 years or so it has been "just another google account".
When I try and install the new Google Pay, I receive an "Account not supported: Enterprise accounts are not supported on Google Pay, please sign in with a personal account" message.
I really hope this is fixed soon, or an error, or there will be some alternative. I literally have given google money at every opportunity, but soon they will take away my ability to give _other people_ money with my phone.