The nuclear and electromagnetic forces in the vicinity are stupendously stronger than gravity at small scales. One could imagine that some electromagnetic or nu

The nuclear and electromagnetic forces in the vicinity are stupendously stronger than gravity at small scales. One could imagine that some electromagnetic or nuclear process might be heavily suppressed by some symmetry such that it could only be unlocked by gravitational forces (which would break that symmetry), but nothing like that comes to my mind. Basically, anything that gravity could do could be done by electromagnetic and nuclear forces vastly faster.