Welcome scrapers (IA, maybe Google and Bing) can publish their IP addresses and get whitelisted. Websites that want to prevent being on the Internet Archive can pretty much just ask for their website to be excluded (even retroactively).
They have the right to try to convince me to let them scrape me. Most of the time they're thinly veiled data traders. I haven't seen any new company try to scrape my stuff since maybe Kagi.
Kagi is welcome to scrape from their IP addresses. Other bots that behave are fine too (Huawei and various other Chinese bots don't and I've had to put an IP block on those).
a large chunk of internet archive's snapshots are from archiveteam, where "warriors" bring their own ips (and they crawl respectfully!). save page now is important too, but you don't realise what is useful until you lose it.