Exactly. Most LCO here don’t own one. Grass over hangs on sidewalks and driveway edges. Most edges are scalped to zero or just above the grass crowns. Often turns brownish in the summer heat etc.
Once the edge is established only a skilled string trimmer operator can maintain the edge with the cutting head flipped vertically. Many have to use a blade again and again.
But even if your climate is hot, keeping a property looking perfect (meaning edged), it has to be done, even down here in Montreal our summers get up to 85+ degrees and humid, grass gets brown, but many people have irragation keeping everything greener.