Never knew this.
In India, 99.99% of all homes have gravity flow and static pressure, so except for very tall buildings, no one gets pressure more than 5 - 10 psi.
Pressure reducing valves are used anywhere the pressure going into a home is above 80 PSI, and those are a lot more common than homes needing their own booster pumps.
Most homes have borewells, storage tanks and intermitten municipal supply. So there is no direct line from local municipal water tower to homes.
My house has one of these, as the pressure would go up to 90 psi sometimes (iirc). Weirdly, my water pressure isn't consistent and can still burst to a "visibly from the tap" higher pressure for a few minutes at a time. I have no idea what causes it.
(Otherwise, water could slowly drain back into the well)
So think of it as a closed system, and it is a common setup, yet I have not seen this behaviour.
Plenty of pressure here (USA) without a pump.
Edit: Plus, I've got to say that it is really cool to get perspectives from all over the world here - India, Norway, and a few other places, just in a few comments - just how differently things are done, and what we each take for granted in our environment.