How is it a problem? There simply doesn't seem to be a moat or secret sauce. Who cares which of these models is SOTA? In two months there will be a new model.
Right, but that's a short term moat. If they pause on their incredible levels of spending for even 6 months, someone else will take over having spent only a tiny fraction of what they did. They might get taken over anyway.
By reverse engineering, sheer stupidity from the competition, corporate espionage, ‘stealing’ engineers and sometimes a stroke of genius, the same as it’s always been