The bots would just get good at getting around the bot block.
Are you sure you want to accelerate this arms race?
Are you sure you want to accelerate this arms race?
That's not what happened with email spam. The spammers lost the arms race.
I remember email before Gmail. I used to delete hundreds of spam messages a day. It was torture. Not anymore. Now my inbox is all legit mail with vanishingly few spam messages. And my junk mail folder almost never has legit mail in it. For all intents and purposes the email spam problem is solved.
And legit important mails ending in spam (mostly billing) is a huge problem for many companies I know. On the other side you can spam without issue and end up in the primary box when you switch servers and providers frequently enough and target a small amount of people (under 100 000).