Developing a single feature at a time over multiple (internal) releases is a faster and more successful strategy than developing multiple features in a single big bang release.
The essential ingredients of good software are self-aware teams, reasonable organisation/management skills and a modicum of leadership. Bad software is often caused by poor or negligent management that fails to secure the essential ingredients.
Customers rarely know what they want until they are shown something they asked for that isn’t what they want.