Sure its good for “rapid” prototyping but the cost and time advantage dont scale. If I need exactly 1 of something FDM will almost always cost less and take less time. If I need 100-1000-10,000 of something FDM will cost far more upfront for printers than the cost of molds and doing a large injection run.
So it really comes down to what you need and want. For testing, and developing something FDM is fantastic, but once you need to scale, traditional manufacturing will win every single time by a mile!
Sure its good for “rapid” prototyping but the cost and time advantage dont scale. If I need exactly 1 of something FDM will almost always cost less and take less time. If I need 100-1000-10,000 of something FDM will cost far more upfront for printers than the cost of molds and doing a large injection run.
So it really comes down to what you need and want. For testing, and developing something FDM is fantastic, but once you need to scale, traditional manufacturing will win every single time by a mile!