Mass production and economies of scale are the arch-enemy of specialization. Leaving aside affordability and exclusivity, there's a reason why annual Ferrari sales barely break into the double-digits, and conversely, Toyota sells millions of cars each year. Production efficiency values simplicity and uniformity, which is why the humble and trusty inline four-cylinder engine, with its balance of economy, performance, reliability, and packaging-friendliness, has become so ubiquitous the world over.