After spending 8-12 years in a single gmail account I learned my lesson. Don't get entrenched or you can't be flexible.
I thought they at least used something complex to attempt to prevent non-EU users using third-party app stores. I also recall a legitimate EU user is not allowed to travel abroad too long before losing access to those stores.
What Google does is completely different - they enforce local regulations on your accounts just if you keep using them within specific region for too long. Though Google dont actually change billing region or Google Play region.