Some scummy scrapers are snowshoeing their way through scads of (residential) IPs, just for one example. Assuming that there are simple universal solutions, eg

Some scummy scrapers are snowshoeing their way through scads of (residential) IPs, just for one example. Assuming that there are simple universal solutions, eg based on IP or UA, suggests that you have been lucky enough not to deal with many varieties of this misbehaviour.