They could offer very customized versions made in an Inconel 3d printer.. Wonder if that (economically & technologically - is inconel seawater safe??) really makes sense, though.
You can use direct metal laser sintering on most powered steels, no need to use Inconel. The reason it's often used with Inconel are the parts you want to make from Inconel are difficult shapes to cast and milling Inconel sucks, eats tools for breakfast.