I've already been paying them $12/month for storage for years, mostly out of laziness, but at least Google One added sharing storage a year or so back so I could add my family.
If they added custom domains to Google One I might be tempted to keep it.
At this point I might just go over to Microsoft 365 family which has storage, custom domains and extra fluff, as far as I can tell, for cheaper than just the storage at Google.
Is outlook that bad?