Both Airbnb (ABNB -1.68%) and Uber Technologies (UBER 0.22%) recently reported their fourth-quarter 2023 financial results, demonstrating ongoing momentum that these businesses are benefiting from in the face of macro uncertainty. The two gig-economy heavyweights have some serious investment merit. But are these phenomenal growth tech stocks worthy of Warren Buffett's investment consideration? There are three reasons I can identify why the Oracle of Omaha would likely love to add Airbnb and Uber shares to B ...