As much as these companies should respect our preferences, it's very clear that they won't. It wouldn't matter to these companies if it was outright illegal, "pretty please" certainly isn't going to cut it. You can't stop scraping and the harder people try the worse their sites become for everyone else. Throwing up a robots.txt or llms.txt that calls out their bad behavior isn't a bad idea, but it's not likely to help anything either.