They are an advantage until they are are a noose around their neck as was with AMD.The point is, Intel HAVE FABS, AMD do not, how much would it cost for AMD to build them and get them running with qualified staff? Intel DO have an advantage even if they are not doing great with them atm. At some point they just might crack it and AMD will be in trouble.
But alas the US government would never let them fail aka GM, cos they are too big and it would ruin the country especially given the current world climate with Putins War!