Now prototypes will cost at least 2x, if not more.
These tariffs are essentially shooting US technology development in the foot. Chinese engineers will have the greatest access in the world to manufacturing and components, while engineers in the US who don't already have a large company to bankroll them will just find something else to do.
I had some projects in the pipeline that I might not bother with now. It's simply not worth the money. US PCB fabs are probably even worse, they still get a lot made overseas, but now they also hate you because they exist to do large orders for the DoD, not joe schmo democratizing hardware.