not necessarily according to the courts. there are a number of cases where scale has been the line between permissible and not - e.g. it's fine to scrape ebay, it's not fine to build an ebay scraping business.
courts haven't always ruled that way but there's definitely precedent!
courts haven't always ruled that way but there's definitely precedent!
https://en.wikipedia.org/wiki/EBay_v._Bidder%27s_Edge