If you build a prospect list from search results alone, you are building a list of businesses that are good at being found. That is a real filter, and it is not the one you meant to apply.
Who is missing
The plumber with a one-page site and no SEO. The guest house that gets its bookings through a platform. The clinic whose site has not been touched since 2019. All trading, all reachable, none of them on page one for anything.
Where they are instead
They are on the map. OpenStreetMap carries millions of business entries contributed by people on the ground, and a surprising share of those entries carry contact details directly.
Measured across real runs of Leads Scraper against OpenStreetMap place data: roughly 65% of places carry an email address, 74% carry a phone number, and 75% carry a website that can then be crawled for more.
Why this matters commercially
These businesses get less cold outreach, because most tools cannot see them. Less competition for attention in a smaller inbox is a better prospect than a heavily-marketed company that gets nine pitches a day.