Getting a company to publicly announce a breach is hard today. Your suggestion would make it even harder, and more data breaches would be kept from the public because of the consequences.
I would rather know that a company messed up and change my password, than not knowing
How? Disclosure should already be legally required--class-actions and lawsuits should already be a thing. The Have I Been Pwned data sets aren't volunteered by these companies. It's a catalog of leaked data.
The class-action response of "identity monitoring" is nonsense. More companies, if they can't afford to or don't want secure data, shouldn't collect it or should aggressively purge it. User data should be a liability.