It really sucks that this is the way things are, but what I did was
10 requests for pages in a minute, you get captchad (with a little apology and the option to bypass it by logging in). asset loads don’t count
After a captcha pass, 100 requests in an hour gets you auth walled
It’s really shitty but my industry is used to content scraping.
This allows legit users to get what they need. Although my users maybe don’t need prolonged access ahem.