A good search ui should allow you to specify number of hits, imo. But 1000 would present technical problems. I'm most experienced with React and it would be difficult to render that many rows of anything in a useful way.

Additionally, depending on how your backend is designed and your choice of ORM, sometimes requests can be slow. In those cases it probably makes sense to design a UI that encourages users to rely on search and filter controls vs giving them a large list.