> The Internet is full of these micro-tyrants and I never see anyone complaining about them.
I'll complain about them. They're, at best, poorly-informed people who don't understand the ramifications of what they're doing as it winds up as abuse, or worst they're malicious actors who I hope are condemned to a life of a 300 baud modem over a rural telephone line in a lightning storm.
The hiccup is, these are two different problems. I'm not the service administrator; I'm the user who has to put up with the absolutely onerous "bot prevention service." Frankly, if you're a private entity, I'm mostly of the mind of do what you like. If I encounter a CAPTCHA, I will probably just bounce off the page. Except, of course, that Google penalizes me for doing that, too, because I Might Be A Bot That Got Stymied(tm).
Where my hackles are truly raised is when the government requires me to work through these moronic puzzles. I shouldn't have to do a CAPTCHA to log in to my transit pass or look up county records!
Finally, it's everyone who will handwave away "well, it's inaccessible but whachagondo" without the acknowledgement that we are all on varying levels of "abled" and that level changes throughout our lives, and not just as it relates to age.