By "markets working as intended", I mean "if one provider of a service has a critical flaw that's specific to that provider, and that flaw is a dealbreaker for some customers, then they ought to be able to vote with their wallets to switch to otherwise equivalent providers that don't have that flaw.
But I see your point that the markets are working logically from the perspective of there being insufficient incentive for companies (well, Zoom at least) to invest in dealing with this issue. Negative press only goes so far, and it doesn't matter much when it's the dominant player in the market by far (in part due to design choices that facilitated these flaws -- minimized friction in the interest of accessibility also minimizes friction for malicious action).
But I see your point that the markets are working logically from the perspective of there being insufficient incentive for companies (well, Zoom at least) to invest in dealing with this issue. Negative press only goes so far, and it doesn't matter much when it's the dominant player in the market by far (in part due to design choices that facilitated these flaws -- minimized friction in the interest of accessibility also minimizes friction for malicious action).