MIM (Metal Injection Molding) has existed for about 4 decades and is a mature and advantageous technology. It is in fact used for the large scale production of small and complex components with high precision and that not require subsequent processing.
What's the downside?
Unfortunately MIM has a high cost, mainly due to the molds.
Companies are therefore increasingly encouraging the development of a cheaper and more versatile alternative: 3D metal printing and in this case 3D Binder Jetting.