Wilson Combat (or Nighthawk, or Les Baer, or Ed Brown, or Dan Wesson, Novak, etc.) does not build 1911s to make them run on HP ammo. Their main breadwinner is not making pistols that should be sent back to the manufacturer as defective work with HP ammo, but making semi-custom 1911 with custom features that people are going to pay thousands of dollars for. Nobody is sending their $300 RIA 1911 to Wilson to make it run HP ammo. Why? Because it does so out of the box. Same as the Springfield Armory Mil-Spec, or just about any other bottom of the line base model 1911. Bank when Colt was the only company in the 1911 game people who wanted trigger jobs, extended safeties, beavertail grip safety fitting, refinishing, checkering, sent their guns to places like Wilson Combat.
Expanding on your example of Wilson combat, they also modify shotguns too. Does this mean that unless you send your shotgun to Wilson Combat you shouldn't expect it to reliably feed 2 3/4 inch shotgun shells? Of course not, though you said that Wilson Combat would not exist without that need. They'll be more than willing to sell you a $350 Remington 870 with $1000 worth or enhancements, and that's just their base model.