Imho a decision that doesn’t make sense, Google already has paid for all the infrastructure so running the service to them is pure profit, not to mention the lost possibility to upsell Google workspace (paid gmail with a custom domain) or Google cloud services to all their customers.
Although I would never subscribe to something from Google for my business, then when they eventually change mind and kill my product, i have to migrate in an hurry. I’ve been hurted too many times
I suggest Authy, BTW. It’s an excellent option IMHO, with cross device synchronization. Thats my favorite part, being able to run it on multiple phones at once without any hassle. And desktop.
If you don’t like the idea of your (encrypted) TOTP database being synced via a third party, another alternative could be to use KeepassXC’s TOTP support and sync the database via a file service you trust (Like a Nextcloud instance)
You don’t even need to trust the cloud storage as long as you have a sufficiently strong database password.