You have to distinguish mathematical models from real world. Physics tries to model the real world with the best accuracy possible, and having a theory that works at some scale, doesn't mean that you can just infinitely extrapolate it to infinite extent.
A famous and well-known example of this predicament is the Newton laws, where people thought that because they work at some framework, they're universal, and then we discovered we're wrong in two things! First, relativity, where we saw that objects approaching the speed of light don't follow simple Newtonian mechanics; and second, the quantum world, where Newton believed in determinism, and we found then through Quantum Mechanics that nothing is deterministic microscopically and we have branching ratios for almost every event.
The Planck scale physics is suggested to be very different from the physics we know. At that scale, all physical forces are equivalent and have the same proportionality constant.
That said, the decent answer to say is: I DON'T KNOW.
It's very wrong to extrapolate infinitely, and we have to draw the line between science and philosophy, and the way I see it, the issue you posed is philosophical and is a nice question, but as long as it's not in the testable range, we shall not pose answers we can't verify.