Home delivery being a first world luxury is a joke. Delivery is a labor intensive low-skill activity. It's fifty times better in developing countries, at least in the cities, where the marginal cost of sending someone to your house is so much lower.
Unless you meant it's a luxury only in the first world, which I could get behind, especially food delivery.
Assuming this isn't a rhetorical question: San Diego, Davis, Irvine, and Santa Barbara all rank in the top 15 US public, top 50 US / top 200 global universities (USN&WR, THE, QS rankings) and have specific programs that are world class ( including the ones you mention--two UCSB professors won last year's Nobel in physics.
Though Berkeley and UCLA have the advantage of most all departments being top 10, "average school" is not a fair assessment for the rest.
Agree on your overall point, minor note that Apple TV does decent at being a streaming box with universal search. The benefit of buying into a walled garden is that sometimes platform owner and user interests align.
Unless you meant it's a luxury only in the first world, which I could get behind, especially food delivery.