I'm not very scared; there are no precedents for similar cases except for security problems or the dissolution of a country.
Update: I see you've edited the comment. Regarding paying Google, I have no problem paying for their services. I don't know what the issue is. By the way, the domain is managed by Squarespace.
Google Registry / Charleston Road Registry Inc. operates the .dev TLD
What they sold to squarespace was Google Domains, the user facing registrar from which you can buy domains from most TLDs. It doesn't get any special treatment wrt to .dev