From the ICANN site, 154 gTLD agreements have been terminated. I'm not sure how many due to non-payment, but https://domainincite.com/30105-icann-to-terminate-

From the ICANN site, 154 gTLD agreements have been terminated. I'm not sure how many due to non-payment, but https://domainincite.com/30105-icann-to-terminate-five-new-gtlds https://domainincite.com/30105-icann-to-terminate-five-new-g... indicates that at least some have been due to non-payment. https://www.icann.org/en/registry-agreements?sort-column=top-level-domain&sort-direction=asc&page=1&agreement-status=terminated https://www.icann.org/en/registry-agreements?sort-column=top...