I can't improve on how unlikely it is that any of that happens. Space is for exploration and the advancement of science, and to a certain extent engineering, if you don't mind the inefficiency of obtaining those advancements in engineering.
replyHow many decades ago were people hyping space manufacturing? Where are the space factories? Where are the profits?
How does 100M tons of platinum safely deorbit? Is the idea to let it crash into the sea?
replybit by bit, and one of the major useful properties of platinum itself is that it's so heat resistant and inert.
replyIt's also useful to have some heavy metals off world for further expansion.