I know a ton of embedded shops that are running x86 (including some actual i386 still) in production, and will likely for years to come. That stuff was bullet proof, cheap and still runs today.

Some of these things have long lifetimes.

Netflix is just a single point. I'd never run current in production.

A CDN *cache* server is a special case. Netflix cache appliances can accept the risk of running FreeBSD -CURRENT and upgrading half their fleet to the latest snapshot every ~2 weeks and we thank them for battle testing FreeBSD's active development branch in production. It really helps to reveal regressions (both correctness and performance) early in the subsystems and drivers that matter to their usecase.

Most users will neither be willing nor able to accept the trade-offs that Netflix chose.

-CURRENT is great for cattle. For pets, I recommend -RELEASE.