Yeah, thank you. It does actually have use cases for regular folk!
About the IP: No actually. I'm not sure why that is, but I assume because a lot of premium VPN services and proxies need to end up going through IP blocks used by cloud providers as well these days.
Most of the blocking I've seen comes down to how well the browser presents as a regular browser. If it looks like an automated bot browser (just raw headless, or whatever) it's more likely to get blocked in my experience than from the IP address.
Although you certainly get some IP blocks or individual IPs that are more likely to get blocked. No offence to DO, but I've noticed their IPs are less reliable. I've never really had an issue with AWS, GCP, Vultr, Linode or Hetzner, except for the odd machine that somehow has an IP address that must be on a ban list, I'd estimate it around 5% probability of getting such an IP from the regular providers tho.
Do many websites end up blocking traffic if it's originating from e.g. an EC2 instance?