Gravitational Energy

In nature, all forces have a limited value, i.e, their effect is reduced if many objects are influenced by that force. Example, the magnetic force experienced by a single iron nail (in a magnetic field) is greater than that of 2 iron nails in the same field.

Consider gravity,
gravity exerts a force that is related to our mass. Now, on Earth, there are millions of people but everyone experiences the same force even if there are billions or trillions. That means, gravity has infinite potential.
How is this possible?

Thanks for replying

Prajwal