Most of us however we perfectly fine with the limited on the accounts... in reality if they just gave me the exact same level of service as they do the free gmail but with a custom domain I would be fine / happy. That is after all what the original service I signed up for was in the beginning.
I have no interest in Google Workspace, I want Gmail, Drive, and Identity. That is it. Maybe Photos... All of which they offer free to everyone still today just not with a custom domain
1. cancelling my Legacy Free Edition
2. moving my domain to another provider (e.g. Proton Mail, Fastmail, etc.)
3. creating a personal Gmail account using one of the email address that will be formerly part of my Legacy Free Edition
I have some hesitance that the Google account creation flow won't allow me to do this.
If you STOP a service (or turn it to a PAID service) on short notice - and a service that is essential to people - then people will have to rush to find a solution... and will feel been extorted.
If you DEGRADATE the service more and more, people will slowly leave or upgrade to PAID, but they will have the choice.
Moreover, email is really a sensitive matter: it's a main point of contact for... well... email... but altogether for online service (IRS, website account, etc.) and in a way our digital life. So you can't just leave such a short notice. However, you have to let your FREE customer know that they have a choice to make quickly... so DEGRADATION is a good tradeoff I think