Blacklisting companies that ghost you after interview

I am generally pretty good to recruiters, never schedule interviews if I am not looking out, never missed an interview after scheduling, never renegotiated an offer after saying yes and never backed off after accepting an offer. I also make sure I personally call other recruiters to tell them that I have accepted an offer and am no longer open for any negitations.

Unfortunately a lot of recruiters do not have the same courtesy of keeping me informed after I have spent precious hours interviewing with them onsite and simply disappear if its a no or of they are still interviewing other candidates. Sometimes the interviewer does not show up and they go silent. I find is extremely disrespectful. How hard is it to say no ?

I now keep my own blacklist of recruiters and companies who treated me like this. I block companies at the moment for 5 years and refuse to interview ( have 15+ years exp ) . If they can blacklist us, so can we.
Do any of you also do this?

Till now I have not started telling these companies that they have been blacklisted when they approach me again(typically they do again in a year or so) but sometimes feel like doing so.