Comment by tscs37

And then what is the problem with continuing this but reinforcing this business structure? Because shitty registrars could now be more shitty?

Honest and good registrars don't have a problem with WHOIS services, you claim they would since the emails they forward could lead to lost sales.

The WHOIS service is just as incentivized to filter out certain mails since they are paid by the registrar and thus get profit of sold domains.