Apple finally has a touchscreen MacBook. Why now?

Last week, Apple finally brought two new display technologies to the MacBook Pro: OLED and touch. For the former, it was just a matter of time; Apple has been using OLED in the iPhone and Apple Watch for years, and also just brought it to the iPad Mini. But touch has never felt like a sure thing. While many of Apple's most successful products have relied on touch: the iPhone, the iPad, the Apple Watch, and some late-stage iPods all featured touchscreens. But until now, it never made its way to Apple's laptops.

Former Apple CEO Steve Jobs' words are infamous: "It's ergonomically terrible," he said of touchscreen laptops in 2010, describing how "your arm wants to fall off" due to fatigue. "Touch surfaces want to be horizontal," he added.

Since then, touchscreens have become ubiquitous on Windows PCs and Chromebooks. Outside of the Touch Bar, which was ultimately reversed because Mac users were not fans, Apple hasn't had a …