It's not impossible, just increasingly expensive. Modern software practices tend move a lot of the things that used to be done at compile time to initialization

It's not impossible, just increasingly expensive. Modern software practices tend move a lot of the things that used to be done at compile time to initialization time or runtime. A lot of modern tooling is built around that idea. You gain a lot programmer productivity in exchange for increased memory usage, startup time and battery drain. Is that worth it? The market seems to says yes. As much as people complain about the battery life of their devices, in aggregate, they prefer apps with even the slightest usability improvements over apps with great performance. In the battle of delivering more tiny little features, programmer productivity trumps all other concerns.