After using a rMBP for 6 years, I realized that using a lower resolution and lower quality display makes absolutely no sense at all if both graphical power and budget is available (first 13' rMBP had some serious issue driving the display). Better quality image is better quality image. I think Apple's biggest selling point over any vendor right now, despite numerous issues with its hardware and software in the recent past, is absolutely top class input and output. It is such a simple concept. A great keyboard (seems to be fixed now) and absolutely incredible trackpad experience along with a display that basically is a huge step up from your past experience means that most users will prefer that setup even if they just use it for basic coding or web browsing. After looking at the first retina displays I realized that Apple didn't just change the displays but it changed how fonts behaved completely because the crisp and clear legibility was key to attract customers early on. I'd say even in 2020 most computers are struggling with good displays which can completely ruin the experience for someone using the product even if every other aspect of it was great.