Maybe, maybe not. If it's not I assume they'll be forced to lower their prices and go out of business. I don't have a problem with a company charging money for their product though.

The GDPR appears to be doing its job here because it's forcing a company out of a business model that is unethical and into one that's better for society, regardless of it's better or not for the company and some of its customers

User data could or could not be worth that much. Having a team of programmers implementing and maintaining features that make the software GDPR compliant is perhaps the biggest contributing factor the price increase

No, that is just the cost of compliance.