My customers and business are not any less important or valuable than anyone else's, and I should not be left being potentially exploited, and my customers harmed, for 90 more days while the big guys get to patch their systems (thinking of e.g. Log4J, where Amazon, Meta, Google, and others were told privately how to fix their systems, before others were even though the fix was simple).
Likewise, as a customer I should get to know as soon as someone's software is found vulnerable, so I can then make the choice whether to continue to subject myself to the risk of continuing to use it until it gets patched.