Supply chain efficiency is probably the biggest piece people aren't talking about. Those tan brick units come from a handful of massive manufacturers who've optimized their entire production process around a few standardized colors. When a developer's general contractor needs 500,000 bricks delivered on schedule, they're going to order from whoever can guarantee that timeline and consistency. Switching to a custom color or texture means longer lead times, potential delays, and honestly it makes their job harder. I've seen this same dynamic play out in contract negotiations - everyone defaults to what's proven and repeatable because deviating from that introduces risk and complexity.
There's also a visual psychology aspect that gets overlooked. That warm neutral tone actually photographs well and appeals to the broadest possible demographic. When you're financing a 200-unit building, you want renderings that don't alienate anyone walking through the sales office. Deep reds might feel too bold, cool grays too contemporary, but that beige brick? It reads as "safe" and "classic" to most people. Developers and their marketing teams know this works, so there's zero incentive to experiment.
What's interesting from my perspective is that this will probably age poorly. In twenty years, these buildings are going to look distinctly early-2020s in a way that actually diverse brick facades don't. The older neighborhoods you mentioned that have character? They've got that partly because people built with local materials and slightly different standards back then. We're essentially creating the architectural equivalent of suburban sameness, just in urban form. It's the path of least resistance.