How about the would-be victims don’t ship exploitable software to production? If that’s not possible, then maybe they should signup for an automated targeted hacking service to find the exploitable bugs before someone else does.
Your argument is straight out of the 1990s. We’ve moved beyond this as an industry, as you can see from the proliferation of bug bounty programs, responsible disclosure policies, CVE transparency, etc…
Yup as mentioned, we do the TXT verification of the domain. We also don't offer self service sign up, so we are able to screen customers ahead of time and regularly monitor for any bad behavior.