They allow agents to lists home stating coming soon,, the general public never gets a chance to see or offer to buy, the agents keep it to themselves , and sell it I know I experienced it
They also post picks of homes that are not even for sale in your area, they are just photos , just to get you to click and look at the same homes that no one else wants. One other thing, all that paper work they have you to sign either as buyer or seller, is designed to protect them and them only
It's very easy to sell your own home, I did it for over 35 years when I flipped homes You save $1,000"s
It never happed on any certain date, it is frequent