A "consent or pay" model is sadly widely used, but it's at least very controversial and probably illegal. No data protection agency has gone on record to say it's definitely illegal and no fines have been given out IIRC, but the EDPB had some tactfully negative things to say about it [0], and the Czech DPA has ordered at least one company to cease the practice in a preliminary ruling [1]. (Which the company seems to be completely ignoring, as is sadly common.)

[0]: https://en.wikipedia.org/wiki/Consent_or_pay [1]: https://uoou.gov.cz/urad/povinne-zverejnovane-informace/svob...