Because our sun is to small and cold. Fusion of elements heavier than Iron only occur in supernovas (and possibly E-Cat processes).
Sure, an Ecat that can barely boil a pot of tea after being hooked up to electrical mains is equivalent to a supernova.
That's because it's exothermic.
Seems really weird that an eCat can do something the sun can’t. Science is of course begging to know the reason why. You just don’t get effects on nuclei from things going on in the atoms’ electron clouds. The two are different worlds and the twain don’t meet (except that nuclei can sometimes grab electrons from inner orbitals resulting in spectacular X rays). How are nuclei built? Are they just little balls of nuclonium or something that can have its own hairy, nonspherical characteristic? Trying to solve eCat might shed a lot of light on that.